So I sanded my yt60 head down about 2 mm and got my compression test from under 90 to 110 psi.
low speed pickup did improve.
I think tomorrow I'll drop down into the valley and re-check top speed if the weather holds out.
BTW: On the speedometer when it passes 30 mph just use geometry. Look at the the other end of the needle. When its a straight line pointing at 10 mph your doing 40 mph. Straight down is 45 mph with the other end pointing at 15 mph.