It’s about 5 years old and sounding like it has a hole in the muffler, but it doesn’t. This year I noticed it can take up to five pulls to start when cold. It always was1or 2 pulls. Then when I engage the blades it will stall unless I pull the metal thingy back slow. Once the blades are turning that is when it sounds like a hole in the muffler. Running without the blades engaged and it sounds normal. Last, it seems to want to stall more while ping through the grass unless I go slower. Any comments are appreciated.