The salesman I talked to at Piers told me I should adjust the shift cable for later shifts after I put the spring kit in. He said it would rev further, (which it does), and later, higher RPM shifts with higher line pressure would result in less slippage. Makes sense, has anyone done yet? Haven't heard anything about it in the GSK posts. He said start with an 1/8" or so move on the cable adjustment & see what happens. Then fine tune it to your liking. I happy as is so far, but want to take full advantage of it.