diff --git a/manifests/esmond.pp b/manifests/esmond.pp
index f8206b1..f5d42a1 100644
--- a/manifests/esmond.pp
+++ b/manifests/esmond.pp
@@ -3,6 +3,8 @@
   $dbname        = $::perfsonar::params::esmond_dbname,
   $dbuser        = $::perfsonar::params::esmond_dbuser,
   $dbpassword    = $::perfsonar::params::esmond_dbpass,
+  $esmondroot    = $::perfsonar::params::esmond_root,
+  $esmondconf    = $::perfsonar::params::esmond_conf_path,
 ) inherits perfsonar::params {
   if $use_db_module {
     class { 'postgresql::server': }
@@ -25,9 +27,7 @@
       order       => '002',
       before      => Exec['run esmond configuration script'],
     }
-  }
-  else
-  {
+  } else {
     # the sudo rule is only required if postgresql is configured by the script
     file { '/etc/sudoers.d/perfsonar_esmond':
       ensure  => 'file',
diff --git a/manifests/mesh_config/config.pp b/manifests/mesh_config/config.pp
index 4943181..ff7cf25 100644
--- a/manifests/mesh_config/config.pp
+++ b/manifests/mesh_config/config.pp
@@ -27,6 +27,6 @@
     owner  => 'root',
     group  => 'root',
     mode   => '0440',
-    content => "Defaults!/opt/perfsonar_ps/mesh_config/bin/generate_configuration !requiretty\n",
+    content => "Defaults!/usr/lib/perfsonar/bin/generate_configuration !requiretty\n",
   }
 }
diff --git a/manifests/params.pp b/manifests/params.pp
index b96785a..0c01515 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -81,7 +81,7 @@
     'nscd',
     'cassandra20',
     $modssl_package,
-# don't want to install SystemEnvironment because it keeps overwriting my configurations during updates
+# don't want to install perfsonar-toolkit-systemenv because it keeps overwriting my configurations during updates
 #   'perfsonar-toolkit-systemenv',
 #     packages that are installed by perfsonar-toolkit-systemenv:
 #       perfsonar-toolkit-ntp
@@ -93,22 +93,13 @@
 #         according to /opt/perfsonar_ps/toolkit/lib/perfSONAR_PS/NPToolkit/Services/*.pm, the following services need regular restarts: OWAMP, RegularTesting
 #       perfsonar-toolkit-sysctl
 #         configures /etc/sysctl.conf (appends values)
-# don't want to install gcc and mysql, it's not required
-#   'gcc',
-#   'mysql-devel',
-# is this for the web100 kernel only ??
-#    'kmod-sk98lin',
+# unfortunately, with ps 3.5.1.x the main perfsonar-toolkit depends on perfsonar-toolkit-systemenv
+# perfsonar-toolkit is also not a meta package, it contains necessary files, so it has to be installed
+# the easiest option to avoid the systemenv package is to create dummy rpm with the same name and a higher version number
+
 # are the ones below still required ?
      'device-mapper-multipath',
-#    'php-gd',
-#    'php-xml',
-#    'syslinux',
-#    'xplot-tcptrace',
   ]
-  # other packages in the original kickstart, but left out
-  # 'perl-DBD-mysql' doesn't exist, it's called perl-DBD-MySQL
-  # 'xkeyboard-config' do we need it, we don't run X ??
-  # 'comps-extras' contains images only, do we need it ??
 
   $regular_testing_packages = [
     'perfsonar-regulartesting',
diff --git a/manifests/patches.pp b/manifests/patches.pp
index e1118ae..d930db7 100644
--- a/manifests/patches.pp
+++ b/manifests/patches.pp
@@ -12,19 +12,21 @@
     $patchpackage_require = undef
   }
   case $perfsonar_version {
-    /^3\.5\.0/: {
+    /^3\.5\.1/: {
       $patches = {
         '01_perfsonar_webservice_auth.patch.3.5.0' => {
-          path      => '/opt/perfsonar_ps/toolkit/lib/perfSONAR_PS/NPToolkit/WebService',
+          path      => '/usr/lib/perfsonar/lib/perfSONAR_PS/NPToolkit/WebService',
           strip     => 1,
-         # file itself is part of perfsonar-toolkit-library
-         # which is installed as a dependency of perfsonar-toolkit
-         # therefore we use the latter as a dependency for the patch
+          # file itself is part of perfsonar-toolkit-library
+          # which is installed as a dependency of perfsonar-toolkit
+          # therefore we use the latter as a dependency for the patch
+          # need to remove perfsonar-toolkit due to dependency issues in 3.5.1,
+          # which means the dependency needs updating (to libperfsonar-toolkit-perl)
           deps      => Package['perfsonar-toolkit'],
           checkfile => 'Auth.pm', # relative to path
         },
         '02_perfsonar_webservice_pageauth.patch.3.5.0' => {
-          path      => '/opt/perfsonar_ps/toolkit/web-ng/root',
+          path      => '/usr/lib/perfsonar/web-ng/root',
           strip     => 1,
           deps      => Package['perfsonar-toolkit'],
           checkfile => 'index.cgi', # relative to path
diff --git a/templates/configure_esmond.erb b/templates/configure_esmond.erb
index 0c91657..74a831c 100644
--- a/templates/configure_esmond.erb
+++ b/templates/configure_esmond.erb
@@ -10,25 +10,25 @@ if [ -z "$(ls -A /var/lib/pgsql/data)" ]; then
     sudo -u postgres psql -c "CREATE USER <%= @dbuser %> WITH PASSWORD '<%= @dbpassword %>'"
     sudo -u postgres psql -c "CREATE DATABASE <%= @dbname %>"
     sudo -u postgres psql -c "GRANT ALL ON DATABASE <%= @dbname %> to <%= @dbuser %>"
-    cp -f /opt/perfsonar_ps/toolkit/etc/default_service_configs/pg_hba.conf /var/lib/pgsql/data/pg_hba.conf
+    cp -f /etc/perfsonar/toolkit/default_service_configs/pg_hba.conf /var/lib/pgsql/data/pg_hba.conf
     /sbin/service postgresql restart
-#   sed -i "s/sql_db_name = .*/sql_db_name = esmond/g" /opt/esmond/esmond.conf
-#   sed -i "s/sql_db_user = .*/sql_db_user = esmond/g" /opt/esmond/esmond.conf
-#   sed -i "s/sql_db_password = .*/sql_db_password = 7hc4m1/g" /opt/esmond/esmond.conf
+#   sed -i "s/sql_db_name = .*/sql_db_name = esmond/g" /etc/esmond/esmond.conf
+#   sed -i "s/sql_db_user = .*/sql_db_user = esmond/g" /etc/esmond/esmond.conf
+#   sed -i "s/sql_db_password = .*/sql_db_password = 7hc4m1/g" /etc/esmond/esmond.conf
 fi
 
 <% end -%>
-#disable JMX in cassandra so will start even if /etc/sysconfig/network HOSTNAME does not resolve
+#disable JMX in cassandra so it will start even if /etc/sysconfig/network HOSTNAME does not resolve
 sed -i '/^JVM_OPTS="\$JVM_OPTS -Dcom.sun.management.jmx/ s/^/#/' /etc/cassandra/conf/cassandra-env.sh
 
 #set esmond env variables
-export ESMOND_ROOT=/opt/esmond
-export ESMOND_CONF=$ESMOND_ROOT/esmond.conf
+export ESMOND_ROOT=<%= @esmondroot %>
+export ESMOND_CONF=<%= @esmondconf -%>/esmond.conf
 export DJANGO_SETTINGS_MODULE=esmond.settings
 
 #initialize python
-cd /opt/esmond
-source /opt/rh/python27/enable
+cd $ESMOND_ROOT
+. /opt/rh/python27/enable
 /opt/rh/python27/root/usr/bin/virtualenv --prompt="(esmond)" .
 . bin/activate