Ok I'm getting really frustrated! This skimmer seems very touchy. I have had this skimmer set up before about two years ago bit not even long enough for it to break in. I have had it running for a little over a month on my solana and at first it was doing great pulling out some really dark nasty skimate. Now suddenly nothing. I took it apart to see if anything was clogged but nothing. Waterlevel is at the line I've tried moving it up and down with no real differences. When it does skim it's only to one side of the collection cups tube because it seems it's getting a bigger bubble to one side where it just pushes smaller bubbles to one side. Also never once was it solid bubbles up the tube. Please help