compression

I did the compression test today and the results were a little strange... Front Left and Right Cylinder were both 150-160 Rear Left and Right Cyclinder were both 180-190 I can't imagine this to be too good... The rears seem MUCH stronger than the fronts? Sorta opposite of an HD...

I bought a compression test gauge with a 14mm and 18mm adapter. The 14mm is too big...It looks like it must be a 12mm...is that correct? Also what is good compression on an 85 with 31K? Thanks, Abe

Does one have to get a compression guage adapter from Yamaha or can one get the fitting somewhere else? What mm size is it? I already have a guage but the plugs are so skinny it won't fit.

anyone know what size fitting is needed for the compression test of our bikes? anyone got a good kit that already sells that fitting? couple of you have mentioned that your kit didnt have the one that fit the vmax

Prior to getting prepared to set the valves on my bike (23,000 miles) I did a compression test tonight. I got readings of 170-175 Psi on all cylinders letting them all go through 5 compression cycles. They also all came up evenly and uniformly so I feel pretty good about the numbers. Not...