When rebuilding original K/H brake distribution blocks, how does one deburr the female brake like seats which are recessed into the block?
I am aware of brake flare "lapping" tools which resurface / deburr the male brake line flares, but I'm not sure what the tools are called which clean and resurface the female seat inside the distribution block.
I seem to recall tools for this purpose when rebuilding steering control valves, yet I can't come up with a search phrase that finds something made for this purpose.
I can rebuild my distribution block and install new brake lines, only to discover leaks because of burrs or nicks at the seats within the block itself.
Thoughts? Suggestions? Tools you have used for this purpose?
Thanks!