I just received my MX in the mail today, after it went in for a CLA with Eric Hendrickson. If you don't know who he is, you need to. The man is a friggin' genius:
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I sent it off to him after I bought it on eBay for sixty bucks (there were only a couple of blurry P&S pics on the listing, so I knew I was taking a chance). It was in dire need of help, so off it went. Eric informed me it had been dropped pretty hard at some point, so he replaced the prism, focusing screen, light seals, mirror foam, you name it. He also took the ENTIRE thing apart to clean and lube everything, and recalibrated the meter and shutter.
All for $93. A damn good deal if you ask me.
It came back to me a week or so ago but had a metering problem, so I sent it back and he checked and resoldered all the wiring for no extra charge. Eric is a great guy, and I can't recommend him highly enough to anyone with a camera body in need of a little love (or a complete overhaul).
And now I have the camera of my dreams, or at least I will when its new skin arrives from
cameraleather...