a fuel nozzle assembly for a gas turbine includes a plurality of circumferentially spaced vanes with holes for flowing fuel from plenums within the vanes through holes in the vane walls for premixing with air . to tune the nozzle assembly , the holes are resized by reforming the existing holes to a predetermined hole size , securing plugs into the holes , and forming holes through at least certain of the plugs to diameters less than the diameter of the existing holes .