I just picked up a PRISTINE 28-70/2.8 off of craigslist for $300. The problem is that it squeaks loudly when focusing from near to infinity. I am sending it off to Nikon Repair tomorrow, but I am curious if any of you have had the same problem. If so, any idea on what it will cost to fix my Squeaky Beast? Thanks, Craig P.S. My 17-35/2.8 squeaks once if you haven't used it for a while, but then stops. The Squeaky Beast keeps on squeaking.