Ok guys here is a situation that has always bothered me. My brother and I are aways in competition with one another. He always has to be better then me. So when I finaly bought my YZ 400 I thought for sure he would nolonger be a worry for me when it came to a drag race down a dry river bed. He has a 87 KDX 200 that has an FMF pip on it and thats it. Granted my 400 beat him off the line, when I had it in 5th he slowly began creeping up on me. It just does not seem like my 400 is pulling like it should on the top end. We are running at about 3,000 ft. I have the air box lid removed 178 main jet needle clip in the middle position. It does not hit the rev lim. in 5th any Ideas on what I might be able to do, would be grateful. It has the stock gearing also.