Re: problem with tripod mount
I had the same stripped mount problem a couple of weeks ago. Here's how I solved it. I couldn't afford not to have my camera for a few days so I had to take the risk of repairing them myself. My theory was that if I screwed it up I didn't have a camera and if I sent it in for repairs, I also was without a camera.
Go to the auto parts store and get a Heli-coil repair kit. You need the 1/4-20 kit, a tube of the red (permanent) loc-tite, and a 17/64 metal drill bit.
Here's the part that takes some nerve. Drilling into a camera that costs that much with a hand-held powerdrill. You've got to bore out the space for the new threads. BE SURE TO TAKE OUT THE BATTERY. You are going to drill through the base of the camera into the battery compartment. There's no way around this. The piece of metal that you're drilling through is so thin there is no way to stop it from being bored out. We're talking double thick aluminum foil. It is not an integral piece of the camera. It isn't part of the body, just the tripod mount assembly. That's why you have to have the battery out. Otherwise you risk drilling into that.
Then follow the rest of the directions on the Heli-coil kit. It really worked well for me until I could find the time in my schedule to send the camera into Canon and get it repaired properly. When you're done, the new threads may hand out just a hair, but I didn't find that it affected how the camera mounted on my tripod head.
I think my total repair bill from Canon is for $150 to fix that and a bad firewire socket. I haven't gotten the camera back from Canon yet, but I didn't get any calls from them telling me I had killed the camera either.