I'm on the forum today to seek information about the clutch slipping on my 2003 Road Star. I have installed and removed replacement friction discs twice trying to get the bike to lock up like stock. The new and old discs are within a 1/10th of a mm in thickness. So, with 8 discs there is almost a full mm give or take. The steels have very little wear. Then I read here on the forum that the wrong oil can make the wet clutch act like its bad. I thought I used V-twin specific on the last change. If that's not it I'm going to try double springing it.