SFWIW, trying to find the right glide can be a real PITA.
My solution, make your own.
Go to a plastics distributor and pick up a piece of filled PVC sheet, say 3/8" or 1/2" thick.
Cut PVC pieces to the req'd sizes, counter bore a couple of holes (I use #8 x 3/4", pan head S/S sheet metal screws /w/ a washer) for mounting screws, and get a beer.
You owe yourself one.
Lew