The air regulator was leaking air and the air in the bay for presoak was sputtering. So I decided to change out the regulator.
I had to grind off the screw to get the block off. Then I decided to change out the metering.
The new air regulator which was used would not turn the psi lower then 80. Then I gave up and decided I needed a new regulator. I then noticed that the air and the chemical are in a tee together with no check valve. So I had to cap the air block.