It wasn't just the chain problem, the V twin design also was over heating and the opposed twin cools very well. Part of why they seem to run forever in my opinion. I think they get extra oil to the piston from splash too compared to any other design but that is just a guess on my part. My 64 BMW has never been apart, it leaks from every rubber part because the rubber is dry and hard as a rock now from age. Not going to take it apart just to put new rubber parts on it though. I didn't have it out at all last year, I need to dig it out and clean it up and run it some this year.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!