I hope you haven't replaced your supercharger yet. About 18 months ago I was having the same issue. I located a company in Florida that deals in rebuilt superchargers. For $375 they sent a rebuilt supercharger and that included the return shipment of the old supercharger to them. My mechanic charged me about $500 for removal of the old and install of the new supercharger and he boxed up and sent the old one back. So under $1000 took care of the problem.
The company is Canadian Supercharger
www. Canadiansupercharger. Com
p.S. My riv is a "95 and I just turned 400K
Saturday, June 5th, 2010 AT 9:20 AM