Ran good last year stored out side over winter with cover. fuel stable used new gas in now .In lake Starts Hard Runs about 5 min then dies while missing runs good on 3rd cly intermintin on 1 and 2. plugs pulled and 1 and 2 wet 3 ok has 3 carbs 2 stroke had total rebuild 2yrs ago crank repaired by welding to fix small vac leak when piston arm went through crank case . All new CDI wires. Possable problems. Plugs friend said use NTK zero gap. Carb ? Carb settings? Pickup. Help apperciated. Motelyfool2@wmconnect.com