After opening, I see three drips from my de filter where the clamp goes around the middle. I have always seen some water around my equipment, but I don't recall seeing water drip from the filter. Should I worry? Is it normal? Is it a symptom of another problem? Is it just not put back together and clamped well? I have a company open my pool, so this is something I haven't done myself. The pool is about 12 years old.