I "think" I'm noticing some clutch slippage on my 98 with 37k. I could pull it apart and measure the plates, but if I'm going to pull it apart, for >$200 in parts, why not just do it? So, a couple of questions about best practices: 1) The metal plates; order new ones, or are the old ones almost certainly good? 2)OEM friction plates? 3)release springs? OEM are $3.75 each, crazy not to replace them, but are stiffer aftermarket warranted? My bike is stock except for a full exhaust system and PC5. 4)Judder spring and seat; any reason to think they need replacing? Anything else I'm not thinking of?