What do you guys do to get an old tire to grip and make speed? Is it the constant wiping of base med prep in the tire weekly even when you know you won't run it? Do you sand them down the week you want to run it and start wiping bite that week? Reroll it if it needs it? What are some ways to get a 3mth old or 6mth old tire to run on a local Saturday night show? I've been running a track where a brand new tire is the fastest so now I have 4 sets of tires with one race on them I need to use up...I realize it's not going to make the speed of a new tire. I'm not talking about series racing here...