anything over 120-125 and both cylinders should be within 10% of each other. if you dont trust the gauge you're using then test with it, then with a different gauge and compare the readings.
Mine - 1989 Yamaha Phazer 485 w/ Comet 102C and boyesen power reeds. 14,356 kms.
Dads - 1997 Yamaha V-max XT 600 stock w/ polaris P-85 clutch
Brothers - on its way home soon! either a yamaha or skidoo. not sure what yet.
First ride of the 2009/2010 season - 11/12/09
09/10 km's - over 1200. pretty good for only half a seasons worth of riding.