Did you check the seals are in the correct way ? Some 09's came with them in back to front and it's easy to put new seals in just like the factory did, you want the two springs facing away from each other.
There is also a weep hole mod that keeps the goom out of the area between the two seal, sometimes the goom can hurt the sealing area of the pump shaft.
Did you surface the head and cylinder when doing the gaskets ? Did you use mls or copper head gasket ? And do you get little bubbles in your radiator with the cap off ?
It's a very frustrating thing hope this helps.