So that's an old style 1050 or new style? What list number? It should be on top like the casting number but on the other side of carb if it is old style and on the drivers side on the side if new style. Annular boosters? Need more info to get close. Does it have screw in air bleeds or pressed in?
That's the casting number, look for a 9375 or 8896 number. Any way it goes, I would try .028's closest to the vents, leave out the middle bleeds, and if the outer are .053 try some .055 to .057. 92 jets square if no power valves. There is more you can do, link below, little more work involved but worth it.