DT7.5 repair problem

[camshaft]

I have replaced the gasket on the carburattor, had a carby specialtist rebuild the seat for the needle valve to stop the flow when the float activates closure of the needle valve. PROBLEM NOW....no fuel getting into combustion chamber. Can some suggest what may be the fault please.

[boats.net]

There is either no fuel getting to the carburetor bowl or you have clogged jets.

[camshaft]

DT7.5 problem

There is either no fuel getting to the carburetor bowl or you have clogged jets.

There is fuel in the bowl...carburettor guy said he cleaned out the jets...what else could be the problem please?