Love my JD 14SB's. Have 4 ranging from 5 to 14 years old. Great machines...xcept....they have carb problems. They surge, spit & sputter, and just sound like junk. Have taken apart carb & cleaned every passage & port w/carb cleaner...no luck. Have put new floats & needles in....no change, what am I missing? Of course a new one from JD @ 90.00 resolves the problem but am rather looking for another parts outlet other than JD & paying extra just for the name. Anyone out there know of other part outlets? It'd be gr8ly appreciated.