Well for anyone rebuilding their box heres a "How too" http://web.archive.org/web/20050322011020/http://18.104.22.168/taco/box.html
I got my box back together and believe it or not it works! For the square cut teflon o rings just use a hose clamp to make them smaller once you get them on. Theres a pretty easy way to get the 44 little balls back in place.
On the piston the worm gear threads into, it has a cap that can be unthreaded and taken off. Then fill the little "tube with as many as you can and put the worm gear in an inch or so. Dump the bearing into the top of the piston and thread it in and they will fall into place. Took me about 5 minutes to get them all back in.