What part of the plugs is black? The very end of the thread will always be black. The insulator, that ceramic 'nose' so to speak, that's the part that matters. '9' is colder. The D8ES-L was the prescribed plug for your model. Could be the D8EA is the same, although I'm not sure. Why not fit the standard main jets? No need to pull the rack. You can change them by removing the floatbowls with the rack in situ. Good opportunity to check those tiny O-rings around them are still OK and seal well. But first of all, verify air intake is unobstructed. No cloths under the seat! Airfilter element good?
