that is the way to make friends and get help on a user forum . . . OP is not representative of all users in Michigan for the record. Lashing out when frustrated usually does not bring more help - just an observation. if no one has had your problem they probably don't have anything to suggest and the reason for no response.
this is from another forum - just something to look at
one thing i would look at is the engine. if it has the yellow air filter cover that snaps down, walk away. they are notorious for sucking air and dirt around the filter and ruining the engine. also look down teh throat of the carb itself to see if any dirt is there. some folks will change the filters to make somethign look maintained, but they usually forget to clean out the carb!