Hobbico extra 300 asap or awarf 60 size or 40 size? These planes love to snap I've built and flown quite a few. I have found that on the 60 size asap move the cg 1/4 inch forward from recomendation. The elevator is also in dependant haves. Make absolutly sure the throws are dead even the tune both ailerons to alittle updraft kinda like a spoiler. You can then use all the elevator you want and the snap will be gone. My asap 60 series has a gms 76 and it is getting close to unlimited, will hover, and knifes on a dime. Good Luck. Oh with the hobbico the fuse is very short comparison to the wing. You will have to fly it to the ground on landings. At low speeds it will tip stall.

Tom