@Alp
Apologies for switching topics, but…. It’s my understanding that you replaced the Vincent twin’s drive side roller bearing with a ball bearing. If I recollect correctly, that was done back in the day by a drag racer in California who was running nitro. Presumably that prevents the problem with the roller bearing outer race walking inward towards the crankpin. Perhaps the ball bearing with also tolerate slightly more flex in the crank? Assuming you did use a ball bearing, did it survive the season unscathed?
You certainly do nice work.
ps… I have one of those tramming setups. Never thought to use it to set up a crankcase. Good idea!