[chumbucket]

We already looked at all the "minor and stupid" things. Trust me. There is definately something wrong internally on that motor and at this stage of the game, we really hate to start tearing it down. MJ really cannot afford to start throwing money at hunches of what may be wrong. He cannot even have the mechanic start "tinkering" as the mechanic is too busy with other customers right now, plus his time will be worth money as well.
I felt really bad when I left MJ's house today because I fully expected to have everything pretty much ironed out. We fixed the oil injection linkage, choke, throttle linkage, put the StingRay fin on the broken cavitation plate (that helped a great deal). Tach was working, correct spark plugs, fixed the high idle issue within the control box.
Seems to run good for a very short time, then starts overheating. Plenty of water flow out the tell-tale, but the alarm will start sounding, the motor shakes violently and shuts down. The heads were extremely hot at that point. Let it cool and it will eventually start again, so we just idled back to port. BTW; this happened several times. Not just the one time.
I don't know. ???
On MJ's behalf, I would like to thank everyone for their efforts, but I fear he's all done for a while. He's pretty disillusioned right now.