I'm trying to learn to spin my Gp Ultimate and am not having a great deal of success. My approach has been to reduce airspeed and then as it stalls slam the stick back and add full rudder. I get a nose-down corkscrew. When power is added the corkscrew tightens but doesn't flatten at all. I have even tried reverse aileron to level the wing and flatten the spin, but the aileron overpowers the rudder and the plane just crabs out of the spiral. I think I'm close, but I'm not sure how to get it to work. The CG is per the plans and throws are more or less as suggested in the manual. I have added a little elevator throw to get a better snap. I'm wondering if I need more rudder. I suppose moving the CG aft would help too. It's already a little pitch sensitive, though, and I don't want to change the CG if I can help it.

Since I'm here I also have two other questions which might also relate to spinning. The plane tends to tuck under in knife edge and has a lot of rudder/aileron coupling. I can handle it, but is there anything I can do to "tune" this out. The plane also has a slight tendency to climb inverted with no forward stick. Any recommendations on that? Overall, the plane is an excellent flyer. I just want to know if there is any "tweaking" I can do to bring it in a little more.