Garman,

I have a SPAD Debonair with a flat bottom wing - that climbed liked crazy.

I tried reflexing the ailerons up which sometimes works. Make sure your ailerons are level with the fuse or slightly raised above level of the fuse. This works for some planes, didn't work for mine.

I also tried another trick that has worked for some guys. Tape a piece of yardstick under the TE of your wing. Be sure and relevel your ailerons with the fuse before you fly, however. This also didn't work for my plane.

I added 2-3 degrees of down thrust to my engine. Problem solved. My plane now flies very well. The crazy climbing is gone.