Well, Cate,
We cannot have that, the Phidias is a manly work, no doubt--but it's made to be used by the weaker sex as well...
(is that harassment? hope not no offense meant)
...Be sure that Art has properly tenderized your feed bottle: they are just so stiff when new, and check it out--there's a soft side and a stiff side--some manufacturing snafu I'm guessing.
With a conditioned feed bottle and using your thumb--it's a thumb button by the way, you should see a real change for the better...
Keep me posted on your progress, we just cannot have problems, I won't allow it.
Best Regards
fono
PS looking forward to the next meet...