Hey everyone...I just finished a FuntanaX 50 electric conversion; running a E-Flight 60. It flys great except when doing loops...it wants to twist to one direction (can't recall which right now). This is particularly true the tighter the loop is. A big loose loop is usually pretty straight but I may be compensating with out realizing it.

So my question is what might be going on and how do I fix it?

I was considering a tip stall, but doesn't seem to apply because it is always the same direction and usually at a pretty good speed.

My final thought is it is related to the firewall angle/offset for a glow engine. So I tried to compensate for it with my mount, but the trial and error factor is a real pain in the butt. My mount is pretty simple, 1 1/2" PVC pipe as a spacer with 4 x 3" screws running through the firewall to surround the PVC and keep everything tight.

Can anyone tell me what the angle is on the firewall on this plane?

If I compensate for it to make the electric engine square to the thrust line will it solve the problem or create another?

Can I compensate for the issue with my radio (Spectrum7) to mix the alleron to the elevator?

Thanks for your help!!