howdy...... lets try this again.... i have a 1892 marlin pumpshotgun that needs some cleaning and i ,am having some trouble getting the barrel off....... little help please .. i also have a 1894 marlin shotgun also all in pieces it is a mod 21 i can not find any info on the 21..... can you please help me......... my great grand father would be proud that i still use these guns 110 years later