Hi guys, a penny for your thoughts... My Rolla has a 7K fitted to what I'm assuming to be a standard 5 speed out of a Ke30. Bellhousing is cast onto the body of the box. When I first purchased this vehicle, it was running a 7K flywheel and heavy duty clutch. As I soon discovered, I was breaking a clutch cable on average once a month. This was because the fork had little or no adjustment, due to the fact that the fork was pushed right against the back of the spline due to the height of the 7K clutch and flywheel. I proceeded to change back to the smaller 3K flywheel and standard clutch. Since then the vehicle has considerable vibration on acceleration and decel, most notable around the 2-4 thousand rpm mark. my question is this... Is the 7K running a counterbalnced crankshaft, and hence the lighter flywheel has thrown the whole thing out of balance? Should I just go and buy the 7K box to go with the motor? If so will I have shorten the tailshaft or any other mods to fit? The vibration is killing me!!!