Ive acquired a Jericho941 with original case and such ( 9mm and .41 ) over the weekend. It comes factory with a 20lb hammer spring, making the DA and cocking a pain in the butt. What is the lowest lb i can go without having to change out the firing pin with a longer one. Im thinking 16 or 17 will be fine, but anything else might be a problem. Any input would be great. Any more information to smooth up the action in the trigger pull would be great. Ive tried the 941 website, but nothing clear on answers from search.