Is the part (that fails) within the fuel pump, caused by the ethanol in the gasoline?

 

No, I got the bike back on Saturday and the manager told me it is a problem with a clip that sits at the bottom of the pump. It holds a rubber grommet in place, but it is poorly designed and it sticks out just a little bit, the pump sits off to the side, so they are thinking that if you put the gas pump all the way in it is hitting that clip and bending it, which then damages the grommet; letting air in.
A new pump is supposedly being designed, so they same bad pump model has been put in my bike again.