Hi Bob,
I think the wing incidence was off on some and not others. Mine took off fine as long as it was throttled up very slowly, and wait for decent speed before yanking it around much. Landing was the hard part, at least for me. I would never turn it going slow. I would start final high, chop throttle, point it down, and fly it almost to the ground and just let it settle as close to three point as possible.
Where in Maui are you? I'm over there once or twice a year, and would love to visit your field.
Steve