Now that I have the proper profile, great results

You are correct. The R1900 and the R2000 heads have separate channels for PK and MK unlike the many other Printers such as the R2400 R2880 R3000 PRO 3800 / 3880

What? You don't know the dirty little secret? Everytime the printer does a cleaning cycle or ink purge after every single cartridge replacement or EVEN when printing borderless, the ink does indeed go somehere. Into the deep cavern of your R2000 at the very bottom of the printer chasis where the Waste Ink Pads live. There they collect the ink your printer throws away for various maintenace reasons. There is a Waste Ink Counter built into the printer's firmware that keeps track of that and when it reaches an arbitrary FULL condition the printer gets the message, You Printer has Parts that have reached the end of their life!!!!! That's it, the printer will not longer run. It might cost you about $200 to get the pads replaced and the counters reset back to ZERO. It's not just the R2000. ALL printer use this system.

Now avoid this disarter, you should have installed an external waste ink bottle to divert and physically catch the waste ink and keep the pads pretty much pristine. Your are no longer pristine.

The R2000 is easy to set up for a waste bottle. I am going to be producing a video on the conversion and I also have the software to reset it.

Then it did run a cycle.  Also, Epsons are notorious for not showing any drop of ink levels even after the initial ink charging which will physically use up from 10 to 20% of the cart's inks.

I once paid $125 for a set and thought I did well!!!!!!! WHich is why before these cheap sets were appearing, I unly used refillable carts and IS inks. Now I am using OCP ( German ) at about 4 cents an ML. But just stick to the OEM carts till they are gone.