I glued from the bottom up, the the top pipes in the overflow are not glued to the bulkheads. And yes, left them at default length. Primarily due to the height of the comb. Sweetspot is where water is just barely flowing into the secondary drain. Relatively silent.I’m getting ready to plumb mine. Did you end up glueing the pipes to the bulkheads in the overflow box? And did you leave them at the lengths that they came out of the box?