I recently bought a Dolmar 341 for cutting fire wood.In the manual for the saw it says the gauge and pitch of the chain is 3/8 .050.I have a Stihl file and guide it says on the guide it is a 3/8 .404.Whats the difference? I am kind of new to the world of chain saws.I have acouple of my farthers old saws but this is the first I bought. Also does anybody make operators manual for Orline saws Thanks Dan