As of 6/20/19
Cleaned air check in brine tank of softener.
Cleaned toilet tanks in house.
This along with all new injectors and seals and spacers should resolve any air in plumbing and iron in toilet tanks.
Check for air and iron in toilet tanks by 7/20/19.
If air remains check other two brine air checks and post question as to alternate air entry points.
If iron remains consider replacing water heater and/or softener valve.

Replaced seals and spacers on all valves (calcite, kat1, kat2, carbon, and resin).
Replaced injectors on kat1 and kat2.
Should probably replace seals, spacer, and injectors on these first three tanks every six months.
Need to add calcite (ordered) and centaur carbon (should check when last replaced).
answer: 7000 Centaur Carbon 10x44 Vortech (media replaced June 2018)
Both KatL tanks are now drawing.
Trickle down drain line from calcite tank corrected.

Recent trouble of iron in toilet tanks.
After much work I believe the problem may have been the water heater!
Flushed much rusty sediment from water heater.
Also flushed my two retention tanks.
Topped off chlorine injection tank.
So far no morning pulse of iron or air.
Other trouble includes pot perm not drawing on either kat tank.
Replaced seals and piston and cleaned kat1, no luck.
Replaced seals and cleaned kat2, no luck.
Will order new injectors.
Need to confirm programming times after this work.