Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
I agree with Bryanj My K3 has them on, I've done very little mileage on it and had the carbs in bits three times, it still doesn't run perfectly at all throttle openings, I am about to start looking for the 550F carbs
... just to be sure this wasn't anything to do with the plus I have swapped 1 & 4 plugs over but to no avail.