Glue and more glue!
Gluing up a set of rear tires for the B4 buggy. Stock open cell foams that came with the tires are good for nothing. AKA closed cell foams fit perfect in the no-name tires. I probably should use their soft compound inserts, but mediums are the only ones I have, and they feel the same as Pro-Lines.
When I punch holes in the tires, I use the newly created tiny pieces of rubber to plug up the breather holes on wheel. E6000 them into place, and will be out at backyard track in no time.