Are you able to substitute another carb (ideally from a running vehicle) if only temporarily and see if this fixes the issue? It could potentially save a lot of faffing about.
And are you quite sure you've eliminated an air leak at the manifolds? It took me two days to find mine, during which time I'd replaced nearly everything else on the engine!
And are you quite sure you've eliminated an air leak at the manifolds? It took me two days to find mine, during which time I'd replaced nearly everything else on the engine!