worse stock i had was on a traditions evolution. Sighted it in one day and got a beautiful 1 1/2" group. Took it out the next day when it was hot and was lucky to get a 12" group. There was so much pressure at the nose of the stock that when it heated up, it just was horrible.

30 minutes of slow work with a file and then a couple pop can shims later, it went back to shooting perfect

I had to entirely reshape the front of the stock in order to get rid of all the pressure that was pushing up on the barrel.