Active Sync issue

I am about at wits end here as the calendar and contact list are two of the most important items I use this unit for. OK. here is what I have done so far... ( twice!). I deleted my partnership on both the PC and the PPC. I did a hard reset on the PPC. Disabled my firewall on the PC. Established a new partnership. Checked all settings on the PC and PPC. Re-synced the PC and PPC. Result: not ALL of my contacts and calander items will sync... only some... I would say about 80% of them. If I delete a contact on the PPC it will automatically sync and delete it on the PC as well. And when I create a new contact on my PPC it will automatically sync and place it on the PC as well, however when I create a new contact on my PC it will automatically sync but will NOT place the new item on the PPC.