I have some issues with the bolt firing pin spring assembly.Is there a set dimension for the spring length,and I measured the spring length approx 2.060 to allow the pin to drop into the cocking piece is this correct.I set the firing pin protrusion to around .035 to 040 not 050 to 060.I am having issues with misfires I installed the barrel myself and thought its either the pin,spring,or trigger .