I have a .32 size, 4lbs. electric plane. ( tail wheel ) I'm using a Hitec HS82MG servo with a conventional type pull pull set-up. My problem is, the rudder cables (thread, string) supplied with the kit ( Great Planes ) keep stretching and become loose after just a few flights. My favorite place to fly is the local high school's practice football field. The grounds are fairly well kept, could be a little nicer, could be A LOT worse. I like to FLY, not taxi around and I fly a fairly mild, sport type style. Not a lot of hard yankin and bankin. So here's the question, What to use for the rudder cables? DuBro has a tiny steal cable, but some people say this can cause radio interference. Someone else suggested dental floss, really ?? I would appreciate any suggestions or comments on this matter. THX BLKSHP1