interesting thread this,
i've just stripped my overdrive, had no idea how bad it was inside until this week.
I need all new bearings and seals, but hoping I'll get away with the shafts/
gears were fine though.
the costs on some of the landy suppliers are really off putting,
i took the parts list from here:
http://www.lrsoc.com/forum/forum_files/Overdrive Repair and Service Manual.pdf
to a bearing shop this week, and they seemed really confident they could beat the prices.
just waiting for a quote so i can get started soon.