1) You don't have school at 10:00 am on a friday?
2) Yo uwill not regret removing the flywheel. What you are experiencing now is needle valve related. It could even be the low end. Does it stall out if you advance the throttle quickly? Or does it matter at all? If it's only when you advance the throttle quickly, then I would bet it's the low endbecuase that is 90% of the trouble with transitions. Secondly, if it doesn't matter (eg, if you advance the throttle quickly or slowly, it still stalls at mid throttle) then it is most likely the high end, or a combination of both. If you adjust the low end, you will likely have to readjust the high end. When you change props, you will likely have to tweak the high end just a bit, but not much.