I have already pulled the harmonic balancer to have it tested again cause the engine was rebuilt last year. Now the machinist is asking me to measure the run out on the crank. How do I do that properly? I'm hoping its just the harmonic balancer gone bad. When the balancer was installed it was torqued to 220 lbs. No oil is leaking from the timing chain cover an the alternator an power steering belts were tight but still a definite wobble on the crank pulley. What else could it be?