Me too ....
OP -
I know exactly what you are talking about. My MBP, iMac, iP4 all sync beautifully with MM. My iPad syncs sporadically at best. SO FRUSTRATING I KNOW. I spoke for 6, yes, 6 hours on the phone with Apple MM support. Here is what we ended up doing:
-Turned off syncing on all devices. On iP4 and iPad this meant deleting contacts and calendars when prompted by the device.
-Make backups of iCal and Contacts!!!!! <-------- IMPORTANT
-Find iSync on your computers, go to preferences and clear sync history.
-Start next with your computer, turn on MM syncing, go to advanced and overwrite MM content with content from your computer. If MM has been corrupted this SHOULD set it straight. A clean upload TO MM FROM your computer SHOULD produce results moving forward.
**OPTIONAL STEP, BUT I DID IT AND MAYBE YOU SHOULD TOO**
-Do a clean install of your IOS device. Just wipe the damn thing clean, back to basics and even though nobody likes doing it it might be a good idea. It's up to you.
-Now, activate MM on your IOS device and let the default push settings stay as is. Your info will now populate. It 'should' work.
However, there is, "One More Thing ...."
This process worked for me for about two days. Then, just as before my iPad and ONLY my iPad began not syncing again. It is almost as if there is a hardware problem (I know, there isn't) that is keeping it from syncing correctly. I say that because so many people's iPad syncs just fine and for a while mine did too. The only other thing I can think of is if there possibly is an app that is on my ipad that is obstructing things. I, of course, would think that to be impossible but it's all I got. If you would like to contact me privately we could identify which apps we have in common and see if we can get to the bottom of all of this.
Either way, my iPad and your iPad just don't sync.
See ya.