I'm finally done with this nightmarish job. Thanks Doug, Ron and Mike for your info and support. I talked to Mike one day thinking I ruined this freaken floor. "Nah, just do bla, and bla, and bla, and you'll be fine".
My biggest concern still is with mixed answers. This was raw super saltillo. It has what I guess is called "sun spots" which is one of the things that gives this tile a unique character. Slight variation in color mostly from orange to an amber on some of the tiles. This layer appears to be only skin deep and seems like it can be damaged by too much aggression. I actually ran some 600 grit sandpaper on one that the client gave me to take home and it did change the color to look more like the bottom of the tile (orange). See pic.
On the second stripping we started to see some clay in the slurry which is when I decided to stop to try and figure out if this is right. There was some old dried wax stuck on some of the tiles creating brown streaks that had to be taken out. We went a little nuts on the stripping and messed up by having areas dry before extracting. Rookie mistake.
On the third day I decided to scrub with sulfamic acid and a black pad and did good at taking most of the brown crap out. Turbo, dried, sealed collected money and got the hell out of there. Hopefully next time it will be easier
Color change by 600 grit sandpaper
Back of same tile. Humm, I see a color change there too
Before last coat
Albert