Good luck this is not a simple task bought all new from US Gear and couldn't even get the radio to drown it out. Would start singing at 35mph no matter what we did or how we adjusted the shims. Grease showed a perfect trac. Complained and they sent a new one but got disgusted and put the original back in and quiet as a church mouse on the first try. Still sitting on that new gear. Had it apart so I decided to replace it with new guess new isn't always better. Try a fellow who calls himself Dr. Diff. If you cant find him on computer I will ck my records and come up with some contact info. He knows his stuff.
