Could you just go to one of the FLS and pick up a new one? You could probably send the other one back to the company. If it were me, and I had trouble before with the same model, I would get a different one. I use a turbofloater 1000, that I purchased on ebay for nearly nothing, and I bought the pump for it new. I had it all within 2 days and it has been working for me for 10 months (and that is even with me moding it to fit in my small spaced wet/dry system)
I wish you all the luck, it is very disheartning when things start going wrong. I have several sps in my tank now, but for some reason, one of them decided to bleach out on me, within 2 days it is completely white. I am just dumbfounded.