AquaFX Octopus RODI unit - need to configure to non-1:1

[Spar]

I have had an AquaFX Octopus RODI unit (the 6 stage version) for a number of years now. It is designed to give you 1:1 waste water ratio, but at the expense of a higher TDS going into the DI... depletes the DI very quickly.

I called them the other day from work to ask about how to reconfigure the tubing so that I can get closer to a 3:1 ratio instead to get my post-membrane TDS down. They explained moving the "yellow tube" from a "T" somewhere, it sounded like I could recall this later, but I can't. Was hoping to get this done over the weekend.

From the manual (link below) can anyone experienced with these or similar types of RODI units explain what they likely were saying?

Product Overview

Manual

 

[Vinny Kreyling]

What you want to do is accomplished through your flow restrictor.
That's in the yellow watse water line, the one you close to get 80 PSI.
I would back off to 70 PSI & check it, then go from there.
That's all I got & it still might not be enough.
Another call might be in order if someone else can't help more.