148 main jet. It was more that the pump was stuck seized open! The pilot was set at 3.5 but I put it back to 3 stock. It's running a k&n. I don't know a huge amount about carbs, I have cleaned a good few but generally run them standard. Seems like its all sorted bounder, no flat spots and a power increase for a 10 can of carb cleaner! I'll take that any day.