Adding air

[Pedal Wench]

There is always some air that you'll hear escaping, but it's coming from the pump, not the valve. Are you sure you're getting the tire all the way up to 100 (or whatever you prefer) before removing the pump? And, like someone else said, remove the pump head in a quick, smooth, straight action.

[coyote]

Presta's are a pain. I usually end up totally deflating my tube just trying to get the pump on. Some times I miss the 'sweet spot' and end up resetting the pump. I bought a schader adapter but the darned thing does not work with my floor pump. Oh, well. I'm hoping with time I'll get better at this.