I just put on a doctor d whole system on my 02' wr 426 and it runs like it needs jetting. Dr. D. told me to put in a leaner needle and put the clip in the fourth position. I was also told by my local shop to put the clip in the fourth position and not to put a leaner needle in. They told me this before I told them what Dr. D had said. Does any one out there have any suggestions?