My Tiger has a 1980 302 #EOAE with the original 260 flywheel #C3OE-638OB. I just replaced the clutch and now have a vibration coming in at 1,500 rpm. The only thing changed about the engine was the new clutch. This causes me to suspect that the 260 flywheel "external balance" is less than that of a 302. Looking at the old clutch I see that it has 4 beads of weld stacked together near the perimeter. Also, there are 5 extra holes drilled in a mounting flange opposite the weld beads. It's as if the clutch cover is intentionally out of balance. I am pretty sure the old clutch came off the flywheel with the weld beads oriented toward the balance weight cast into the flywheel. Can anyone shed some light on this issue? Any help would be greatly appreciated.