[jvandyke]

did a little scoping, managed to feed the borescope into the bell housing, pretty interesting but inconclusive, no "smoking gun". Went in through the upper passenger side opening, and a little through the timing mark inspection hole from the top, camera doesn't fit too deep in there though. The camera head has a tendency to get stuck too.
Can't see anything in the bores, am going to try that again on Tuesday with yet another scope. But I highly doubt it's valves because all the pistons seem to be about mid stroke as I probe them from the spark plug holes with a stick.
I will continue probing.
What about an internal bearing failure? I suppose if a rod/bearing let loose and got wedged it'd lock things up. I tried to scope the oil pain through the drain hole but couldn't make out anything. Hopefully the next scope reveals more.