I just got my hands in a single shot, Iver Johnson shootgun in 410, but there is a problem with the trigger, it seems to have the trigger spring either missing or broken, the hammer can be pulled and if the trigger is manually push forward the hammer stays, when the trigger is pulled the hammer drops but not all the way to the firing pin, I can push the hammer and will move all the way to the firing pin but will bounce back, if anyone has an idea what could be causing the problem or how to dissassemble to try to fix it I have no idea and would like some help, I know the ideal would be to take it to a gunsmith but i want to see if I can fix it. any help would be appreciated.:headbang: