Thanks Stick that is some great info!! I have I Mustang that I might try it on. I am assuming that it will work on single wings also. ACF I don't use kill switchs. I set my throttle so that the manual trim om my 10x will close the butterfly all the way. I have to have at least half trim for it to even run. I am also planning on going to the new LIFE 2100 6.6 volt packs. JR requires no regulator. And one more thing that I did was to remove the choke butterfly and solder the little air hole closed so that it primes a little easier.