or you could replace it like I did saturday.... 107 shipped from bma

you could also try to take the pump out and figure out what is wrong... it really isn't that complicated... 4 screws hold it together, and a magnet inside a "sealed" area is turned by a magnet in a non sealed area. (you can get to the "sealed" area by pulling on the plastic cover.

or how about this... Ringmaster (Bret Luter) has a used pump I'm sure he'd be willing to sell.