My story: Had weird knock on the frong of my block--replaced belts, alt, and tightened everything. noticed while tightening alt. the pulley has a crack running 180 degrees around. went to a couple junkyards to no avail. ended up welding the crack up. when the motor is on you can see it wobble still----- is this going to hurt anything? im still going to get another pulley but for the short term (to work and back) what is this problem going to cause?