I have some drivability problems with my 83 Pontiac 6000 2.8 - which I think is caused by a bad carb float. The engine will stumble when driving around corners, backing-up and when climbing a steep grade. I've also changed the MC solenoid and checked the ignition timing, plug wires, vacuum lines, fuel and air filters and EGR. Any advice on rebuilding or replacing the float in this carb would be appreciated.
TIA