Trust me I checked all the connections + everything else possible and not so possible, the last thing I wanted was to send this back!! Anyway it didn't act like a loose connection, it acted like the TX/RX freq was drifting, I tried 3 different radios and 4 different rx (FM +AM) but no matter what set up I had the Monster would start acting up after a couple of minutes but I could run my MM with no problems. I tried different motors, all new wiring etc, etc, etc up until the V3 gave up completely.