[TR] TR-3 Rear Crankshaft Seal

[John Walker]

List,

After taking TR-3B TS#68368 around the block for it's first movement under
it's own power in 30 years, I discovered that the rear main seal is leaking.
ISTR that there are a couple of options for replacing this seal with modern
technology. TRF's Viton seal doesn't require machining the crank, while Moss's
does. Are there any other options? Any experience with either version with
regard to ease of installation and effectiveness once installed?

TIA,
John Walker