1977 Ski Tique 71c Transmission removal help

Gents,

I have a 1977 Ski Tique with a Borg Warner 71C with the RH drive. Here is my sad tale:

Committed the cardinal sin of leaving the plug in. The engine compartment flooded with the summer rains, and the transmission was underwater for a week. Trying to be responsible, I changed the fluid in the transmission. Transmission was fine before. The seal on the fill tube seemed to do its job, and I did not see any water in the drained fluid. I got some Dextron III atf and followed the advice on the forums in the change. I did not drain the lines and tried to keep gravity from emptying them before I hooked them back up.

On my maiden voyage after the fluid change, the boat initially ran fine nfor 5 min. In a semi-tight turn at 3/4 speed, the RPMs maxed out, and I felt the trans fully slip. The boat would move, but slipped at idle. I bumped it in and out of gear to get back. At the dock, the bilge had some of foamy pink ATF fluid. I hoped this might have been residual stuff I could not wipe up from the draining, and prayed maybe the slip was due to me not filling enough fluid initially. I refilled the trans fluid, and idled around. No such luck. The transmission fluid is leaking badly, and appears to be being slug around the flywheel. Seal I hope? I can't figure out why it went, except for perhaps I had the fluid level too low, not compensating for what I thought were still full lines.

I would like to pull the trans and fix the problem. Am I on the right track, is there a recommended proceedure for the removal, and can someone (Eric Lavine?) help with a recommendation of parts that I should replace. I would like to look before I leap. Thanks for any help. If there is already a post of this somewhere, could someone direct me to it. Thanks. Keith

x2