on a g3? works ok?

Yep okay on a G3, but that's not to say I had problems controlling before the mod, just easier with the valve. Had the pieces since I ordered them along with the skimmer from asmskimmer.com thought I should use them.

Found the bubble level would stay constant in the throat and would only need to adjust every month or two and that was after I pulled the skimmer and pump out for cleaning as would take a bit to settle down. If just taking off the cup and and rinsing it wouldn't need to adjust after putting the cup back.

Move the valve maybe 1/8 of a turn changes level in the throat by 1/2".