Tipover, please tell me, no wait can you draw me a picture of what i need to do to fix this ground problem if it has already broken on my 140. I have done everysingle thing to my engine and airplane to try and fix my low RPM glitch and this is the first time ive ever herd of this broken ground thing on the boot and or circut board, ive always suspected the sparkplug boot is causign the problem and have done everthing i can to stop anything from vibrating by useing a strong clamp on the boot, but since my ground must already be broken its still glitching even with a clamp, i supose the worst case sinario is if its broken at the circuit board part.