I recall from past CVK carb conversations with the now infamous 'fast fred'. that he had been using 47 pilots. And I recall ginning some up, so they must be an even wire drill size.
I have quite a collection of jets, I will look to see if there are K47 pilots and measure the hole.

05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter