I am looking to replace the firing pin spring in my Remington 700 F-TR .308 rifle. The stock spring has over 2000 rounds on it. I have read old posts that the more desirable springs are made from Chrome Silicon to reduce spring set. I was looking at the Tubb Precision CS Duo Firing Pin Spring. Supposedly the two springs are wound in opposite directions, which offset their radial biasing and can help in accuracy. http://www.davidtubb.com/tubb-remington-parts/duospring-rem700-short Anyone ever use these? Any comments on them? To me, to create the same offset, you just install one in one direction and the other in the opposite. After all, isn't it just which end you are looking at as to if it is CW or CCW? What other springs would you recommend? Thanks for you input.