[Sniper]

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It is the fact that the MGR calculation that we typically assume shows most of us with almost twice the amount of MGR that they are reporting.

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This problem, is indeed a problem with your data in pokertracker... make sure you have the latest version of pokertracker, delete your sessions and reimport.

You can see this easiest, by going to the summary tab and looking at the %ofPot column, it will be much higher than is actually being taken, because your data is bad.