I agree that rebuilding them yourself is a huge pain. There is a guy on eBay who reboots good used axles. I have not bought from so I count vouch for but... I would probably buy from him before I attempted the rebuild again. Here's a link [URL="http://http://www.ebay.com/itm/371008770796"]

I read somewhere that the rebuilds have been ground down and do not have the longevity of the original mb joints. I also read that if one is just starting to go you can reboot and move it to the other side of the car so that wear occurs in a new area. These are just things I picked up on some forum somewhere so take it with a grain of salt.

There is also an aftermarket boot that is stretchy enough that you do not have to cut off the cans. I think they are called Astoria and there is a special tool that stretches them out so they can fit over the cans.