How did you transfer the beer? Have you moved the kegs a lot? I love WLP007, it's pretty much my house yeast. The one issue I have with it is initially that yeast drops like a ton of bricks, but it you disturb it it takes along time to settle out again, for whatever reason.
Also, any dry hops?
I have heard about the clarity issues with MO, but I haven't experienced any myself with MO.
Have you tried Biofine or isinglass?
Otherwise, my only suggestion is time.