Hi Guys,

Yeah, I was concerned about a fried 4-in-1 as well, but I figured if both rotors were turning that was probably not it! Anyway, the problem turned out to simply be a couple of loose set screws on the collar for the lower drive gear. I removed the gear, inspected the shaft, reassembled everything, and off I went!

Thanks for all the suggestions! Not everything was applicable to this event, but perhaps they will help me the next time!

John