3000rpm. You're trying to accelerate hard from 3000rpm? :O Not going to happen!

Adjusting the AS will not affect this at all if you are WOT. That's the main that's too rich, for those revs. When you back off, you're mainly running on the needle. The AS only affects very small throttle openings, up to 1/4 open. Jetting depends on throttle openings, not engine revs! I am not saying you should go smaller on your mains to compensate, unless it's rich throughout the rev range.

The answer is, if you're trying to get away quickly, then you should not be trying to accelerate hard from such low revs on a two stroke especially.

If you find the same sort of behaviour throughout the rev range (i.e backing off at 8,000rpm and at 11,000 causes the bike to speed up) then it is likely you need to run a smaller main, as the bike is too rich, in that case.