things were going great-then.....

so im cruising along on my little skyhawk, about 3/4 throttle the all of a sudden, it starts vibarating more than it ever has before. power seems ok. speed was unaffected. just intolerable vibration.
checked my motor mounts :all is well
checked my chains: all is well
vibration definately related to rpm and not bike speed (happens whe bike is stopped too)
does it when the clutch is in or out
anyone have any ideas?

hats off 2 u guys!
front mount was loose. The shims of lead i used fell out and left the bracket loose enough to rattle. I am sooooo happy



I was worried that something went wonky with the crank or bearings in the motor