Hi, will give the shim a try weekend weather permiting. The plane is at a guess 15lbs. I will weight it. A guy at our field has the same plane with a moki 210 in it and the model is perfect no tip stalling at all. I do know that we have a mid west cap in our club with a Zenoah 45. That will tip stall but no where near on the scale of my Extra. I can expect it if i was flying to slow, or on a dead stick landing with no wash over the plane from the prop, but at a good brisk pace i think the plane should be better.

Thanks for your imput this far.

Paul