I've been running dirt techs in the dirtwebs which are fantastic when the track is moist and has grip. When running on a lower bite track I can't get the dirtwebs or any other tire to hook up with closed cell foams, open foams work a ton better. I've tried the rolling pin, trimming the inside edge, and punching holes in the foams. Does anyone else still use open cell foams or just me? I hate open cells by the way!