Lets gather all the data. I'm on IOS 8, what are you guys using?
So if we cut the difference in our regs and gauges being different. 0 shims is essentially 850 and 1 shim 950. Lol.
ok, 3 shims to 0 shims the pressure i got was 1075 / 1000 / 900 / 825. tested with a new old stock air america gauge (old big one!) that measured psi