Solving the Craftsman table saw miter slot problem

Make a table saw sled for your Craftsman table sawEvery so often I get an email from someone asking me how to make a table saw sled for his Craftsman saw. The problem is that they have grooves that are different than regular miter slots. They look more like t-track systems. Naturally, this makes it hard to construct runners for various sleds you might want to build.
Felix Pitre has solved the problem with this solution. He made snug-fitting runners by cutting them out with his router table. Thanks Felix. Ill refer people to your pics from now on!

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Update: Just heard from Dan Johns over on Facebook who solved the problem this way, allowing him to drop the sled in rather than threading it in from the ends:

I used my Dremel to grind off the tabs that turned those miter slots into a t-shape. There were only 2 tabbed constrictions per slot; one at the front of the table, and the other at the rear, so a little grinding on the left and right of each of those two areas smoothed the slot out for a regular rectangular hardwood runner.

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