Here's a follow-up. I've ordered a fuel module from Rock Auto in the States - it's going to save me about $250.00 in parts costs for the identical Carter part. Apparently Carter won't warranty the part unless the fuel tank is completely drained and steam-cleaned, and the fuel filter replaced. Rather than the $1100.00 my engine mechanic wanted, it's going to be closer to $750.00 going this route.
The transmission is a different story. It has been diagnosed as an internal valve failure related to a planetary failure. It's going in for complete repair next Wednesday, so they won't know how tight the complete geartrain is until they get it apart. They've given me a preliminary estimate of $2000 - $2700 depending on the extent of needed repairs.
Sigh. | 
