I recently acquired a 1940 production Safety Hammerless and discovered that the firing pin does not move. It needs about a week in a solution of ABF and acetone. My question is: what kind of a closed container do you use for this soaking process. I use a large glass jar with lid for parts but this does not work for a whole gun that has not been cleaned in 50-60 years with frozen screws. I have a large plastic jar with lid that works for the small SH, but am concerned that the chemicals will melt/soften the jar. Also, how hard is it to find a firing pin, FP spring, and bushing, if I need them.