sgates,
Have you looked into the Application Profiles used for those phones? You can add or remove the Default_ScreenSaver and Help applications for any IP Phone. We typically put the 5360 on its own Profile ID to reduce Error Logs from filling in when non-5360 IP Phones try to use the Help application.
You could look to see what they are using or try to make a new Profile to ensure they get both applications.
System > Phone-Related Information > Application Profiles
Thanks,
TE