Got one of these on Craigslist, mostly working but the strike hammer spring snapped off and I don't see it anywhere. You can see the notch in the hammer assembly where the spring fits. Note that the snail/cannon cock is removed in this picture, the spring was held by the cock screw (it was like a leaf spring, not a coil spring, similar to the one at top left pressing against part of the rack assembly). Seems like I could just attach a coil spring to the hammer assembly just about anywhere and anchor it in various places. But I wonder if someone has a tried-and-true fix for this.