We had a fabricator where I used to work that was very skilled at doing this. You have to be very careful not to warp the shaft. He would run a bead...
I was told the "documentation fee" came about after 9/11. Has to do with dealer retaining documentation of the sale because of the Homeland Security...
Your best bet would be to take the rack off and take it to somewhere like Motion Industries. They'll have the gauges to measure the tooth size/teeth...
I'd take the sprocket, spring, and chain to Motion Ind. They will measure for you and match what you have. They can help with the bushing/bearing for...
Sue, I don't know your location but if you have a Motion Industries, Kaman, or other industrial repair parts supplier in your area you could take the...