Cleaning skimmer/re-break-in?

[asylumdown]

I just cleaned my skimmer properly for the first time since I got it. Took apart everything that could be disassembled, wiped off all the film and grit that's accumulated since April. I didn't touch the dial that sets the water height though, and now that it's running again, the water is way, way lower in the chamber.

Is that normal? Is it just breaking itself in again? Should I tighten the dial to raise the water level now, or will I wake up with an overflowing skimmer cup tomorrow if I do that?