I have had this quad for about 2 years when i got it, it was a basket case and since have rebuilt the moter, replaced everything new plastic, seat and so on and so on. My issue is the pipe is the older LRD adjustable i have seen and have been told it was one of the best made for this quad problem is i have no idea how the adjustment works? I do alot of fast trail riding, 300 ft drags, and dunes not sure what adjustment is the best for what type of riding. Any and all help would be greatly appreciated