The problems you are having are unrelated to these two file changes.
For one... StorageDevices_Radar.sh is ONLY looking at locally available drives with a specific label type.
The other changes were to remove the cron job on mds that looked for file servers, and to only run NFS and SAMBA queries if PK_Device = 1, meaning they only run on the core.
pxe boot would have NOTHING to do with this.
As to your shares not being used, though things are listed online... I mean.. Do this... edit StorageDevices_StatusRadar.sh... hash out the backgrounding bit at the beginning, and sudo -i, then bash -x /usr/pluto/bin/StorageDevices_StatusRadar.sh | tee > /var/log/pluto/status_radar.log
You will eventually have to stop it with ctrl c, but let it get a couple of loops in. We can fix whatever is wrong most likely... but... I simply cannot imagine it has to do with these simple changes.