I had KR while cruising with my comp g so I turned off the knock sensors below 2,200 rpm and it was fine for about 2 years. I then swapped my trans and put a new tc in at the same time and turned my knock sensors back on at the stock settings and no more KR. 130# springs are perfectly fine on a stock chain so long as the idle is bumped up a little. I ran 30K miles on 130# springs and you could barely catch a nail in the dampener when I pulled it out.