Just maidened the P-47 tonight. Used the Vanessa to find the CG, made it according to the book. With the Saito 100 on it, and a 15x6 prop, you need to hold full up elevator while taxiing, and on rollout, until it gets some speed up. If you punch the throttle, the tail will still come up with full up elevator applied. This cuts grooves in my runway, not a great thing. It took a couple of clicks of down elevator and left aileron trim to keep it pretty much hands off level in flight. I believe it is somewhat nose heavy, as it doesn't slow down for days when you throttle back on final, and it flies well with more throw on the elevator than what is called for. I don't want to induce a stall by adding more up elevator, but by bringing the weight back just a little, like moving the battery back by it's length, that may do the trick. I never retracted the gear during flight, but I did drop the flaps, and it ballooned some, but nothing scarey.