Wheel Cylinders Where Art Though?

[SofaKing]

I put USA kits in my 1939 pu wheel cylinders and three leak, due to corrosion pitting I could not hone-out.

I searched the old threads and they suggest that I should buy new USA wheel cylinders which are available at NAPA and C&G but these threads are years old. NAPA's website has no parts available and C&G only has a right rear.

Does anyone have a current source they have used recently for buying a serviceable set of 4 wheel cylinders?

Has anyone replaced the 1 1/4" cylinder with a 1 3/8" and how did it work? (1 3/8" is available at Rock Auto, whereas 1 1/4" is not)

Is the mis-drilled feed hole still a problem on the chinese stuff?

Thanks.