What size is the nut on the counter shaft sprocket on a 1999 wr 400? When do you know when you need a new clutch with out tearing into it? I just replaced the clutch cable because i thought it was stretched. It was a bit but I am still close to the end of the adjustment, about a 1/4 inch of threads left. Which clutch to use as a replacement? RMC has the tusk brand for under $40. EBC for 109 and hinson for $157?