My GTO was coughing, spluttering and snatching on light load, was almost unrideable. Despite having correct float levels, 25 pilots, 130 mains and needle clips second from top she still seemed to be running rich. I was sure the choke plungers were seating but they were the only source of overfueling left.
Pulled them out, prised out the tip rubbers (rock hard but NOS carbs) with a sharp point and needlenose pliers. Original rubber disc diameter was probably 7mm but only had a quarter inch punch. So stamped a couple of 2mm thick viton rubber (Ebay) discs. Put these in at an angle and used a small blunt screwdiver to press the sides in and down into the recess, working round the tip. Refitted to carbs and made sure there was a bit of slack in the choke cable at the lever end.
What a difference, she now runs smoothly at low revs and is pleasant to ride. So that's another issue cured, still vibrating at higher revs but will sort that in due course.
Brian.
