I'm building a crosscut sled for my tablesaw. I got 2 Kreg aluminum runners to use for the sled. I've seen a lot of tutorials for building these, and several show to shim the runners in the TS slots to keep sideways movement to a minumum. So, I put tape on the outside of the slots, just enough so the runners weren't tight, but so they would still slide easily but keeping any sideways movement to a minimum. Put a little superglue on the runners, laid the sled down on them for a short time to set, then removed the sled and screwed down the runners. Now my problem! The sled will slide about halfway across the table then binds up. I don't have my 12" dial caliper anymore to measure, but apparently the TS slots aren't perfectly parallel. Looks like the runners are too tight to the inside of the slots. So, can I sand the aluminum like you would wood/phenolic runners, or will this just gall the aluminum? Or, is it just going to be easier to break loose one runner, and hope I don't tear up the plywood too much, fill the holes, and just move it slightly? The Kreg runners do have several threaded crossholes for plastic set screws to take up any movement, but I hadn't figured on needing these. By the way, will heat do any good on the superglue or am I pretty well screwed on this? Thanks. Greg