I have had a M series 10591 since 1996 with very few problems over the years, one ignition module 15 years ago. It has been a great machine and I have no desire to replace it. It stalled on me the other day and would not restart. I was getting spark but figured it might be the module again, replaced it, still not starting. Disassembled and cleaned the carb. No visible damage to jets or needle. Reassemble still not even a glimmer of starting. Won’t even start with starting ether. checked compression, strong. No obstructions in the muffler. Stumped