I have a 5 yr old John Deere L188 22 hp B/S that just won't stay running. Darn I'm aggrivated! Carb's been apart 4 times, replaced fuel filter, fuel pump pumps, clean gas. Could it be electronic? There's a round thingie on the front side of the carb that has 2 small wires comming out. Any chance of that being bad?