Oil injectors, aux port actuation

[sv51macross]

Tired of putting oil in the gas at each fillup. Recently replaced the oil injection lines and after a week realized that the leading housing injector line wasn't drawing oil. Now that I have the UIM off, I see that the leading manifold injector stopped drawing oil halfway so the oil in the line stops 5" from the injector.

Would rather not have to wait/pay for new injectors, can I clean them with reasonable effort if they are clogged? (May be clogged, little/no oil passed through them for the last few years on account of my inexperience with Mazda Wankels and the previous owner being a ****).

Also, my aux ports won't work. The sleeves and actuators are free, but won't work. They worked before I had the intake tract off, now the aux ports won't open. Any suggestions? All the lines were snug on their nipples.

Unrelated, can I ground the manifold off one of the heatshield nuts? I would love not having to take off the LIM/heatshield to reground my O2 sensor.