HI,I just bought this gun to redo, i like to fix up old guns and make it look like i bought it yesterday,, I have a single shot 12 gauge , i got for $60.00,, no name , made by,HARRINGTON & RICHARDSON,ARMS CO.PAT-FEB 20-27 1900.MODEL 38588-----PAT MAY,14,1901.Could you help me find, the side release pin, i have it but lever is broke, but still works with screw driver,also would like to get new stock, have it but someone used alot of fill in putty, and i can't get it to stain all one color...............thnxs,,,,,TOM..