Thanks for the answers guys, I am going to use a servo to work the choke so I guess that the plane will be "legal" for IMAA, IMAC, and AMA at least I hope it will be. This is my first 33% sized plane and only my 2nd. gas engine. I am planning to start flying IMAC competitions in 2004 and didn't want any suprises when I show up to my first comp.