At some point Yamaha updated the SRX powervalves and added some material to the end of the valve where the cable hooks. I guess the theory was to keep the cable from pulling through so easily. My question is when did they start this update. I just picked up an 01' SRX with 2400 miles on it. The valves appear to be the updated ones and I'm wondering if they are the originals or if the previous owner would have replaced them.