Float needles replaced after one was chucking fuel everywhere. Chap who did it fell off a horse and hopsitalised himself so, since it is misbehaving, I'd better check his work. Settings please?
The actual fault is lousy idle and a misfire at 4K. So I'll be checking the coils and choke cable first of all... :?
Find the thread in Steamers titled "Carb Help". Therein lie the answers you seek.