It's the thousandths actually that make a difference. After all, as far as our knowledge goes, average is reduced by 0.002 by kicking out of the best 500 a score which is 1 higher than the one by which it was replaced. So, a 33 kicks out a 34, and reduces the avg. by 0.004 - as far as we know (and yes, the 33 is useless in the end, it needs to be kicked out by a 30 or lower anyway).
Anyway, as much as the feedback is appreciated, I know about the many threads about the calculation here, and I posted my issue in the bug forum for a reason. I do not want to ramble about the calculation. Three is a bug, or there are hidden factors. Not the customers can solve the issue, or give an answer proper, but WGT needs to address the issue, and reply. Or confirm that they do calculate with hidden factors (or wrong) by not addressing my issue - I could even be wrong, but as things are according to my knowledge, I have reported a bug.