Bit of a noob question, but it's my first oops and I don't have a manual. I get the concept of the purge, unscrew the cap, the bottle pin is released and no air gets back into the marker. The bit I don't know is when screwing the bottle in, does the cap have to screwed in so that the pin on the bottle gets pressed as it is screwed in...or do I screw it in after the bottle is attached so that I don't get an air spike?
