Thanks for your feedback!
I used the "spa technique" that I found on an F150 forum, specific to the King-Ranch leather. You see, the King Ranch leather up until the past few years (not sure on the exact year it changed) was uncoated analine leather, straight from the King Ranch leather supplier. Being uncoated, it absorbs anything that comes in contact with it, unlike other leather seats in most cars that are vinyl coated, and essentially you are cleaning/conditioning the vinyl coating on those, and not the leather. On the Analine leather, you need to pull the dirt/soiling out of the seats.
I used a capful of baby shampoo (tearless, lol) with a pan full of HOT water (as hot as your hands can stand) with washclothes, and kept the seat damp/steaming, alternating washcloths. It steamed the dirt up and out of them, and then I applied Leather CPR as a last step, WHILE they were still wet. Repeated the leather CPR conditioning (but not the Spa treatment) over the next month, and now apply the leather CPR every 3-4 months as I think of it.
I may need to do the spa-treatment again soon, but I am careful about any grease I have on work clothes, etc.. to avoid soiling them as much as I can. I love the KR leather, but it's a different kind of cleaning/conditioning from regular leather seats.
The only other brands I have heard of having uncoated (analine) leather are Land Rover, Rolls Royce, Ferarri, some Mercedes, BMW, etc. I love these seats!