My ranger has 360 mile on it and developed a noise in the exhaust area. I have the screen removed from the end of the tail pipe but what has happened is the spot welds for the muffler case have cracked and when under heavy load it has an exhaust leak there. My machine is in mint condition and is in a heated garage so it is not a rust issue or anything like that. I have the Polaris extended warranty but would it be better to just purchase a smaller aftermarket muffler assy. and move on?