SU Fuel Nozzle Leak Help

[art11144]

Doing some general maintenance, carb cleaning (had a sticky float or needle valve), etc... and noticed minor fuel leak at fuel line (pipette) from the bowl into the nozzle inlet the nozzle. Figured it to be the fuel line and/or clamp into the nozzle inlet. Changed fuel line and switched double wire clamps and still leaking. Could not see a problem with fuel line pipette or double clamp. Has anyone had a problem with a leaking nozzle where fuel comes out at bottom? I put new nozzles/needles in carbs about 6-7 yrs ago. Would appreciate thoughts/suggestions before I replace nozzle with old spare I have. THANKS!

[redroadster]

A fleck of rust / grit caught on the seat and it leaks