AP MGR explained please!

[djmeehan]

I am regularly getting much less MGR reported by TITN than my pokertracker suggests I should get. It seems to be consistently about half. I have asked TITN several times to explain how my rakeback is calculated but their responses seem to suggest they don't actually read the emails. I am a US resident.

1. Are bonuses cleared deducted from MGR?
2. Are there some fees that I am unaware of?
3. Am I getting charged for being a US player?
4. Could someone give me a detailed explanation of how MGR is calculated?

It's probably getting reported correctly but I should be able to determine for myself what I am entitled to.

Thx in advance