Matt.

I have over a month on mine (on my tc3 like it matters) I am thinking the same thing you are. I would honestly say about the end of the 2nd race day to the middle of my 3rd race day they started to get a little squirrly. Its hard to tell because the last couple of layouts at scottys have been on parts of the track where their hasn't been allot of running. I guess the best person to ask would be Brad. He is about the fastest guy I have seen using them and I am sure he is not on his first set like allot of the rest of us. I am just trying to figure out how many sets I really need to purchase for the novak race. After that it is back to sorex's for me................................