I have a marlin model 80 "AJ" that was purchased as a parts gun but after I cleaned it up it seemed too nice part out. The gun is missing the complete bolt and I would like to know what bolts would fit. Do different years of manufacture work in others or do I have to find one from another "AJ" stamped gun? Numrichs are out of stock but I found one on Gunbroker .MARLIN 80 , 22 cal. COMPLETE BOLT ASSEMBLY : Bolts at GunBroker.com . Thanks for any help can give.