Having thought about this a bit more I've realised that the problems really started when it was low on fluid before I took it out. The gearbox sump had been fitted with bathroom sealant so it was ****ing oil everywhere. I only checked it when I pulled the drivetrain, but it was whining quite badly just before that. The oil level was down to the join between the sump and the casing so I'd guess about 3 litres short.
I'm wondering if this did some permanent harm to the TC before I even took it to bits, and so whatever I've done afterwards has actually had no effect on the underlying problem.
Given our sponsor's online sale, is it worth sticking in a used TC before I tear it all apart again? At least I can drive it while I collect manual conversion parts then...
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