Wireless Synch setting not in calendar options
 

We are running BES 4.1 for Exchange. It's a new installation, and this is my first experience with BB. I have a problem with one of my handhelds not synching its calendar. It's a Nextel 7520 version 4.0. After searching the knowledgebase, etc. I went looking in the options on the handheld to verify that the Wireless Synchronization setting was set to yes. To my surprise, the setting isn't available on that handheld. I don't have a problem with my other 8 handhelds, just this one. The Wireless synch setting is there on the tasks, contacts, etc., just not the calendar.

Thanks in advance!