Seals and crank are new. Perhaps 200 Km (?)
No sign of weapage. But, could be I suppose.
Don't want to split motor if not required.
But I have another motor, just rebuilt for the roadie bike, just needing a cylinder (hint hint!) and another coming from a wreckers yard.
Can't mix'nmatch too much, the racers an MC18, the roadie and 'new' motor MC21. Hex Cyls, and round cyls.
But between the lines, I'm reading it's going lean from sucking air through crank seals once everything expands?
R7