I have a WWII MAB Cal 7.65 (.32 ACP) Model D that was given to me from my Grandfather. I went shooting without cleaning or oiling the gun and the front cap and recoil spring came off. I know that was dumb . Anyway, I am excited about the gun and have sense cleaned, oiled and it now seems to be functioning properly without firing. Should I be concerned about firing it? If I shouldn't fire it what should I do to get it in firing condition?