Put my cheapo compression gauge on. Was getting right at 105psi.. I was afraid of that. Too low you think? Probably could use a bottom end rebuild.
Might try my friends better quality gauge, but pretty sure this thing is somewhat accurate.
Pulled the carb and its a sha 13.13 with a 65 jet. May be running a bit rich, but the plug looks spot on
Next I'm going to get fresh gas, properly gapped plug, and give it another go. After that i'll break down top end and see if there's anything out of the ordinary.