Ba-dum-bump (rim shot) But seriously folks...Thanks a lot for your help guys...It's almost ready to fly, so we'll know soon if we get any interferance. Thanks for the tip on the opto isolator Mike. Are some Rx's more or less succeptable than others to ign. interferance? I've been told that Hitec supreme 8ch. rx's are a little better in that respect? That's what we're using...