[whpalmer4]

It might be helpful to know just what you mean when you say they aren't syncing efficiently. My guess is that you've probably gotten an stale client listed in there which is keeping the database from compacting, making syncs take longer and longer.

In OmniFocus on the Mac, open the sync preferences and click the Show Clients button. There should be one (and only one) client listed for each device you use. If you see any duplicates, or devices you no longer use, delete them, deleting the one which has synced least recently in the case of a duplicate. Once you have done that, sync everything again, and after a long first sync, you should see improved performance.