I just did complete rebuild on the stock 1.3 motor and ran fine vibration free before i put on the trail tough yj wrangler conversion. Therefore I do not believe its the motor. But after installing tt kit in 2nd gear from 20-25mph everything shakes very badly any ideals what it could be? I still have the stock tires and rims. And it only shakes in 2nd over the 5mph duration I am clueless about whats causing this any similar experiences?