Hello Twin Cam, you must review the motor and box support, it is very postible that there is some broken. To do this you must use a lever, I use a chuso or long bar, move the engine and the box with the lever there should be no excessive movement. If you do not know how to do this, get in touch with any mechanic and do it, if you have any warning doubts. Fuerte and greetings from Quilpue V region.