OK... So that wasn't that hard. Regreased/cleaned the bottom brass peice, still didn't work, so I streched the leather plunger and it set into the air chamber better and now its working very smoothly. Thanks Hillrider, I'm not shure if that "fixed" it but will definately work smother with the bottom cleaned. The pump is 10 ish years old and that was the first rebuild. I take it I wont ever need to replace it.
Scott