bro,
what you can do, I dont know if you can rectify is to use styrofoam as the base for the pump to sit on or otherwise what i can also suggest is that you go to Sim Lim Square, go to those computer shops see if they got discarded foam box which were previously used to protect the new power supply or new mobos. Just need to find the right size and perhaps slot your pump in then tada, should work bah (: