Martini Triggers

[Martini2]

According to drawings (and examination of parts) there exists a one piece link between firing pin spring and the sear. Thus all the spring pressure bares on the critical trigger sear. The part's geometry actually presses advantage of spring force over short section that is sear arm. I've searched the BSAs and target versions of Martinis and to be sure gunsmiths can lesson the sear engagement and lighten the firing pin spring. I hesitate to get aggressive with those techniques because of obvious safety implications. I was hoping some experienced guide might suggest "easy fix". We know how random and rare such things can be There does also exist on this big Greener one adjustable piece (save reworking parts).
That is the treaded backup part that holds the firing pin spring in block. However the threading is so course one turn in or out is all that's possible before the function of lever and block is out of time. Must be the redundancy built into this Ol' action. One thing it does albeit with stiff trigger pull is keep on booming. Thanks for comment RJB