So, I hooked it all up today. BTW, that needle does pierce the copper pipe. Ask me how I know. (opened valve, water poured out..lol) But I still opened the hole up to 1/8" and put it all together.
Yay!!! I have ro/di water coming out!!!
Now, when they say ideal flow is 3:1, that is 3 waste for every 1 ro/di "clean" water, right? (I hope..lol)