gene 375,
If you followed the instructions setting up c.g., axial c.g., and the throws of the surfaces, the plane should respond well. C.G. is back from where the wing seats into the saddle, not the "leading edge", and axial c.g. is netural, wings level. I'm using a y.s. .91 supercharged and an apc16x8 prop getting 7500 to 7800 rpms static. With this combo, the plane sitting in the grass at idle(2000rpms) will pick the tail up, full up elevator is required during taxing and rollout. With 1/2 to 3/4 throttle, the plane leaps into the air. At this point, I relax the stick to maybe 1/3 up and the plane does a graceful climbout, and has never departure stalled or tried to flip over. On takeoff, the trick is to "roll" into the throttle(don't "punch it") while holding full up evevator. Doing this, my bird rolls about 25ft and leaps into the air. The plane flies at scale speeds at 7 clicks off idle, flies like it's on rails, and flies as good inverted as it does right side up. This plane seems to like long approches, I would try several low speed passes to get the feel of approches. My bird is very predictable in the landings, no bad habits. Reminded me of my pattern plane execpt slower. After touching down on the mains, as odd is it seems, wait a second, then roll to full up elevator. this will eliminate nose overs.
If you own any tail draggers, the h9p-51 should'nt be that much different. If you don't, remember up elevator is your friend with this plane. Take a deep breath, stay focused, and you'll be fine.