Try to turn down the air flow and/or the water flow.
Unfortunately you have a horrible brand name of skimmer. I am not saying this to be rude, because I have a Visi-Jet, which is made by the same company and is even WORSE!
I got so fed up with the damn microbubbles that I converted the skimmer into an airstone-driven model.
I would get a new skimmer when you get money, I know I definately am.