i inherited my grandad's Winchester model 75 and it is in fair condition. There is a scope that is no longer attached and has lost a lens. There is a one piece of mounting hardware. There are some wear spots and scratches. The main thing is that it is missing the bolt. I would like to buy one and keep the gun, but I have searched and can't find one. I don't want to have to part it out. Does anyone know where I could get a bolt for it?