Hey guys, I'm new here and by judging from the google searches I'm sure this has been beat to death but I was wondering about easy mods for my saws to help with performance and help them breathe and run easier. I have an MS180C, 3 026 ( none of them are pros or anything just straight 026), an 028WB, an 029 farm boss, an 039 and an 048AV. The 039 I just got not running and the muffler was shattered inside and melted starting to go back into the motor but appears no internal damage has been done and has really good compression. I did fire it up for a few seconds but don't have a bar and chain on it yet so I didn't run it long. Also, not being a member until now I couldn't see any pictures of exhaust mods or anything so any help, direction, instructions would be greatly appreciated for any or all of them. Also, all of them run 3/8 chains so another question is what size bar and chain is, in anyone's opinion, best to run on these saws? Thanks in advance.