This tractor is not used on a daily basis and ran fine all last winter, plowing snow. Now starts ok and may run for 10 - 15 minutes and then stalls, can start again but will continue to stall for a few tries and then wont start until is sets for 5 or 10 minutes and the process repeats again. Drained gas and replaced with fresh leaded gas and also then ran 2 bottles of seafoam through, and replaced spark plugs. I'm going to replace points, condenser and rotor today, but I still think its something else that's the cause of this, anyone have any thoughts on this. Thanks.