Hello Edward,
I agree we have many possibilities. While troubleshooting we came across the following: Started the unit and let her idle, all seemed ok for about 30 seconds to a min, then she stalled, restarted right back up again i grabbed the throttle and just moved it a tiny bit and the engine stalled. (started getting a sneaky suspicion about the TPS) or the motor that opens the butterfly. Tomorrow the tech is bringing in the TPS, were hoping that is the issue, if not i will be spending alot of cash to repair a unit with over 12,000 hours.

Film at 11:00 :)

Bob