Anyone using herbie overflow ?

[Abbyreefer]

So I set up my overflow last night and decided to change from the durso to the Herbie style overflow because I found the durso to be just a tad loud and wanted to see what the Herbie woudl be like since I've only ever had either a stockman or a durso. I'm having a hard time matching th ereturn to the drain... Either the drain pulls too quickly so that falls into the drain hole and when I turn the drain ball vale to slow the drain or increase the return its way to much even when I just barely open or close the ball valve.

Any recommendations ?

Main drain is 1" and about 5 inches from the overflow box top. Emergency is 3/4" and about 1 inch from the top.