I have recently bought a GSP 72" extra and fitted it with an OS 160, every thing is going well plenty of power flies very stable and gentle but then has a nasty tendency to tip stall especially pulling out of loops, i don't think im using too much elevator or eratic control movements but it must have power almost all the time. I don't know what i can try to see if i can stop this and make it a little less work to fly?

Thanks