To answer a question, there is no metal to metal contact from throttle pushrod to engine control arm. The arm is plastic and the control horn is plastic. It may have been something totally different then metal to metal noise because I tried keeping the High Speed Needle away from the engine to avoid any contact and I still had the glitching. It may have just been that the battery connector was on the verge of becoming unplugged from the switch connector that the added vibration was enough to open and close the connection. To answer another question I was a foot away from the plane with my transmitter in hand and antenna bent 90 degrees as normal. I can't troubleshoot at the moment since I removed the engine until I get the new HSN bracket along with some safety connectors I ordered. Once I get everything put back together Im going to do a bunch of tests to make sure it was just the connector coming loose and not something wrong with the receiver or transmitter.