Originally Posted by
merziac
They can work but seem not to want to well when I really need them too, maybe I'm not holding my mouth right.

It's all about the technique!
I have had issues with the washer not sealing well, which usually requires flexing the leather washer open a bit and adding a little grease or vasoline to improve the seal. The quality of the washer seems to be a bit poorer than the classic Impero, but that also applies to the pump overall.
Steve in Peoria