Tried to put a harmonic balancer on today. I got it started fine with a longer bolt. I can tighten it down to within about 3/8 of an inch, but no further. I had heard a trick was to use some anti-seize on the shaft, which I did. I used an impact with plenty of pressure and still it hung. Using a ratchet just turns the engine. I don't want to damage the crank by using a hammer or too much pressure. Anyone know of any good tricks?