I just installed my Selenium K7 inks and tried a nozzle check. I probably shook the bottles a little too much and introduced air into the ink. I did 2 cleans then a nozzle check. I had missing nozzles in shades 2, 3, 4, and 1. I did another head clean which improved things and I was missing nozzles in shades 4 and 1 only. I decided to leave the printer for a few hours (about 5 hours). Then I performed an ink charge cycle using the WIC reset tool, did as head clean, and I’m still missing nozzles in shades 4 and 1, but also 6 and 7. I have piezoflush in the GO position.
When I put my R2000 to bed a month ago, I had a perfect nozzle check with both OEM inks, and also with piezoflush carts installed. Carts are from inkOwl.