Rebuilding Kelsey Hayes front disk brake calipers?

After attempting to rebuild my kh calipers years ago, one came out good and the other kept leaking! Rubbers were a pain in the ***! Reason for rebuild was the pucks were freezing up! I said screw it and found a brake vender can’t recall who! Sent my cores to them and sent me rebuilt ones that were sleeved with stainless liners! Money well spent! Never looked back!