Well I took the carb and fuel tank off this morning to clean everything. The carb was spotless except for two tiny black specks of something in the bottom of the fuel bowl, a couple more specks near the float. Got it all back together and runs real good except now it doesn’t want to start back up until a cool down of around 20 minutes. I checked for spark while hot and all is good with the coil. I pulled the plug and no arcing at all. I put in a good plug and it fired right up. It’s been starting and running as it should every time. I’ll sharpen his blade and take it back.