I'm using a 21.5 TSR The One in our 21.5 Pan Car oval class. Run line is 144' medium/high bite. Endbell @ 45. Rollout is 4.44. The car ran good and temps were around 130. However, the motor fell off around the two minute mark. I also tried to drop timing, added gear but times went down. Seems like the TSR motors like lower rollouts. Any recommendations to pick up more speed w/o fading?