40+ year old convex rack with concave rollers-Any hope of replacement parts?

Question

It seems that modern tracks for concave rollers have a concave channel to help hold the wheels on the convex ridge. This old track does not have that. It just has the ridge. If I remove the worn down track and replace with something like I'm not confident that the concave rollers will fit in the channel of a modern track like 23-272. Any help would be appreciated.

Tom · Accepted Answer

Hello! As you suggested, they unfortunately don't make tracks like you show here anymore. The 23-272 is the best option we can provide, but the good news is that I have had a lot of success with it. The rollers fit perfectly well as long as they're properly adjusted both before installation, to allow clearance, and after installation, to raise the door back up.