I was thinking maybe it's a heating issue. I bought the plane and engine together and havn't touched the module and I assume it was working fine before- it is placed on top of the engine box. Maybe the 3W prop was loading the engine so much it overheated the module after awhile? I'm also running a 6 volts regulated to the module, but it has warnings to not exceed 4.8. I know alot of ppl run 6. Maybe the combination of those two variables is doing it in. So far, It only acts up after the engine has been running for a while but not while it is running.