Thanks
Put a seal in the slave, bled it, and checked the throw. Need to buy a lottery ticket! Throw is really close to stock. I'll fab up the push rod once the engine is together and I can take measurements.
Some more details on the slave (sorry, didn't take any pictures).
Normally there's a connecal spring behind the piston (fluid side) which exerts outward, pushing the piston out of the bore. This wasn't going to work since I needed a bit of clearance between the pushrod and the clutch lifter. Ended up machining a hole in the piston so the stock CB350 ball would fit. Also installed the connecal spring on the outward side, so it pushes piston back in the bore.
Started in on the engine. Progress will be slow. Recleaned the cases, cylinder & head.
Some pics
After lapping the valves and assembly. "leak checked" with alcohol for about an hour.
I check it about every 10-15 minutes.
Not the best pic, but no leak through
Yesterday it was windy, but the temps were warm enough to paint outside.
Decide to go with a darker gray color.
Before
After