I am refurbishing a 1967 S-22 (#266) and need to replace two of the hatch slide guides. The hatch sits on the two original 7/8" rails and the slides are simple pieces of metal that rest across the top of each track and then wrap around the outside of each track.

I've posted two pictures on the photos page in the "restoration" folder. The pictures aren't great, but you can get an idea of what I'm dealing with.

I'd appreciate any suggestions on what to replace them with. Thanks.