When I made the switch to a glide from my 727 the car was .01 slower to 60' on the first hit. It went 1.29 with the 727 and 1.30 with the glide. It has since been much quicker by playing with everything and fixing the engine that Shadydell screwed up. See Sig for best times......I have no regrets and it is deadly enough to win races now.