wow...you're lucky. i have a old gas low wing trainer airplane with a US 42 on it. I first had interference problems with in and i was using a PPM reciever. But i soon learned that having your kill switch, inside your airplane, with a metal rod attached to a servo to control the kill switch, all within about 6 inches of the reciever is not the greatest thing to do...[X(] And then i also changed to a PCM reciever which helped out a bunch.

I also had a problem with my alieron servo burning out constantly.
*But i soon fixed that problem by putting one servo in each wing for each alieron. Now i seem to have no problems with that plane.

So basically that was my first plane to learn off of for gas engines. (what a pain!)