There should a slight gap between the torque bumper and the engine. When under accelleration the engine will come back and hit the bumper. If you have it too tight against the bumper you run the risk of it breaking.
Hope this helps if there is anything else I can help you with let me know.
hi
i have always run it up to the motor not tight into the motor also this helps to adjust for the clutch missalignment have you checked to make sure you primary clutch is straight and not binding the belt