@Sunterbach
It seems like you have several things working against your rebuild like Kevin^ said.
Make sure you open the throttle plate on a larger cylinder or any cylinder during a compression test. Adding oil into the cylinder to do a second test can shed some light on the ring sealing abilities. The ring end gap being under 0.030 shouldn't be an issue. Having the wrong rings fluttering about in a ring land is an issue so double check the right ring height is being used. Your low numbers sound almost like ring damage or a broken one up top. They should have nice smooth even faces with some slight machine marks or ribs from moly face coatings most times.
It seems like you have several things working against your rebuild like Kevin^ said.
Make sure you open the throttle plate on a larger cylinder or any cylinder during a compression test. Adding oil into the cylinder to do a second test can shed some light on the ring sealing abilities. The ring end gap being under 0.030 shouldn't be an issue. Having the wrong rings fluttering about in a ring land is an issue so double check the right ring height is being used. Your low numbers sound almost like ring damage or a broken one up top. They should have nice smooth even faces with some slight machine marks or ribs from moly face coatings most times.