new balancer too tight

The key looks fine, as much as I can see anyways. I meant to say the damper measurements are larger for the new damper vs the old one- by like .001.
Actually got an email back from CAT and they said to heat the damper. They didn't say how! I'm thinking I'll just set it in the sun and try that and more anti-sieze. Man that stuff is messy. Makes me want to put it on the bottom of a doorknob somewhere like my neighbors house.