I have a 1974 xlch that has been about two years in the making, after sitting in my garage for over 15. The motor is heavily modified and I now have barnett kevlar clutch plates. My question is, what do you guys with HIGH HORSEPOWER xl's use in your trans/primary. I had always had an issue with either the clutch dragging or it would slip and there was no way to adjust it for a happy medium. Now, even with the new clutch, it is dragging a bit. I have not had a chance to see if it slips yet, I have about 50 miles on new pistons and am not going to crank on it yet. Will be changing the motor oil this week, and will change the primary just as a good habit. I have redline in there now, but am not sure if that was a good choice. What are your thoughts? Thanks in advance!!