Weight would be the main concern. If you have to add a bunch of weight to the tail to get the CG right, then it's possible that it will change the flying characteristics of the plane. You might be disappointed. You may have the power to hover, but a 12 pound plane with a 10 pound airframe isn't going to land as slow. You can machine the engine to try to shed some weight, but I don't think it will be enough.