I've a '52 6400 flatbed that I'm getting back on the road. I'm limited to the farm right now until I get my brakes fixed.

I have a new master cylinder, fully rebuilt hydro-vac brake booster, and new lines. I cleaned up and honed the cylinders and installed new seals and springs. The cylinders are leaking from the inside.

Is it within tolerance to minimally bore out the cylinder to rid it of the surface pits? Initially I thought the surface pits were too shallow and sparse to amount to anything.
I've researched the web extensively to find affordable replacements which a starting price of $70 is not (ChevysOfThe40s.com).

I am using this thread as a cross reference for my research: https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=587514

Thanks for your feedback.