I have a 78 3/4 chevy and the damper seems to be making lots of noise. I am not sure if it is out of balance or what? It makes like a "swishing" noise, everytime it does a full circle? Is there any type of adjustment I should be looking at? Cleaning it or having it machined? Come to think of it... maybe that is why my front seal is leaking (I'll leave that one for the next message). Any body out there have this problem it is really a noticable noise once you hear it you can recognize it.