I've used a single action airbrush (Paasche H) for 2 years, and gained enough experience and confidence to try a double action model. My local hobby shop only sells Paasche, so I recently bought a VL. Is the Head Protecting Cap supposed to be on the airbrush while painting, or is it only to protect the needle when not being used? I tried it both ways and got finer lines with it on, however, dried paint started to build up on it.
Scott