4CS - base bolt
  • 'stk 4CS basebolt F1'  indicates we are using:
    • stk 4CS basebolt and bv pist in F1  [always/only in F1]
    • gp adj bb in F2
  • We started this on 4-15-17 with test 2769. 
  • gp adj bb v3 grooved relief hole
    • primarily used in 4CS half kit, this eliminates the ls circuit