spitfireMK1, I have the same problems with my RCS 140, but mine is still glitching at just above idle, you know its when you comming in for a landing, anyway. ive nearly crashed 3 times and since then ive worked this plane over and over trying to find a solution for the glitch but its still there, for now all im doing is range checking it and it fails everytime, my hose clamp is so tight that ive twisted off the nut and had to replance it, is there any other thing that might cause the glitch ? maby the ignition box. im getting ready to just buy a new 140 and put it in my plane and if it glitches too then ill at least have a warrenty to fall back on. before this glitch started my plane was the most exciting plane ive ever had and now its been almost six months with no solutions to my glitch.