I have a SLP single pipe and silencer, and V-force 3 reeds in my sled. The jetting from SLP calls for 510N main jets and the e-clip in the 4 position. I have ran it several times now, and it is running way too rich. If anyone out there has a similar set up on there sled, let me know what you think for jetting. I am not sure if I should go to a 500 main jet or a 490. The spark plugs are extremely black and full of build up. Let me know what you think. Thanks!