I raced Marc's buddy one time with my SRX and beat him. It was all set up by Marc. I got burned by him too when I bought clutch parts. I was told they were brand new and the bushing was gone on the helix and weights/springs were certainly not brand new. I hear I am not the only one who has been burned.
A waxed boat will go faster, a waxed plane will go faster and it is hard to believe how much a windshield can make a difference. Look at a racing downhill skier with their skin tight suits they wear. They go slower than a sled and it makes a big difference. So guys, get out the spandex!