I finally got the Tunze 9010 to work now though it's rather noisy. It used to be quieter. There were two problems, one there was a piece of shell that got stuck in the exhaust pipe of the pump itself which you can see. That was the only area I overlook when I took the skimmer apart 3 times. Second, the pump itself make this clanky noise which cut down the efficiency of the pump lby like 90%. I have to tap it several time before the pump work again. This issue occur again even when I put the skimmer back together. Again, I had to tap it several time for the pump to work efficiently.
I guess now I'm down to the pump itself working but very noisy which I might have to send in for service. I purchased this pump new less than two years ago.
-Jeff