today getting my saws sharp and ready for ice storm damage this weekend and doing some test cuts to make sure my saws were cutting well. While using my MS250 which was screaming really well my hand near the brake was getting warm. As I looked at the front of my saw the muffler was glowing bright red and it looks like the plastics near the Oiler were starting to melt. This was only after a few minutes of test cuts. I never remember this saw ever doing that before. Any ideas as to what’s causing it? History of the saw is I’m the second owner. First owner ran straight gas through it I’m guessing and trashed the cylinder and piston. They replaced the carburetor Not knowing what was wrong so I got it basically free. I replaced the cylinder and piston and have been using it the last 4 years and it’s run great however I did have to replace one of the muffler studs 6 months ago.