I now own two pre-war Techs. Both replated. One (call it Tech A) with Rhodium by Hibco and one (Tech B) with Gun-kote by Delta Echo. The only difference that I can find between them (visually, as I have no calipers or feeler gauges) is that Tech A has "PAT. NOS. ON PACKAGE" inside the indented diamond on the top of the base plate and Tech B has slight ridging on the safety bars on the base plate. Tech B is the easiest, friendliest, safest DE I've ever used. Tech A is... less friendly. I feel like I have to be very careful when using it or I end up with a bunch of nicks. My first thought was that I had a bad blade, but when I swapped the blade to Tech B, I got the same safe, easy shave as ever. Any thoughts?