OK. I did not realize that the transom engine mounts were inserts/replaceable (Is it safe to assume that the front ones are similarly worn and worth replacing, too?) I suspect that is my principal problem, and that the other problems downstream with the drive were precipitated by this. I have never pulled an inboard engine, so that will be a new experience. I'm in my 50's now, but started out as an Engineering Student/PT Mechanic. I switched gears in my 20s, pursued a career in Medicine, and ultimately became a Forensic Psychiatrist. I still love to turn a wrench, however (when I'm not bending some minds:rolleyes
........so long as it all goes smoothly, of course. The old boat I have was built well for Georgian Bay waters (I live north of Toronto), and if the engine is still good (I will check compression), it may still be worth my while to pull the engine, replace the mounts.........and replace the entire drive with the commonly available aftermarket (SEI) unit (I'm currently assuming that my upper and/or lower gearcase was damaged by all of this)
I am new to this forum. I used to be a very active member of a forum for Audi V8 owners. I had two of those old beasts, and kept them running forever thanks to the insights and support I received.
Thank you to all for your assistance. There are plenty of marinas around here, but I have not yet met a local marine mechanic that I feel I can trust to do a good job on my old beast.
Gunter