Sticking with the A-cylinder.
The motor came out of the factory with a .5mm base gasket. I think I'll go with the .3mm.
With my RB head mod, the squish band measures at about 1.35mm as it sat with the .5 base gasket. I originally had it set at about 1.05mm with a .3mm.
The power valve looks too good for me to mess with it. Leaving it as is.
I am hoping that I don't install the PV linkage backward, somehow. Is that possible?