Holy poop, this flow control will be the death of me. It's so darn tight it's near impossible to turn. Every time I try to close it I loosen the plastic tank section.
First couple of times my auth was like that. I always put my thumb on the sm logo and twist the jc in conjunction with the base with the other hand. Some had to use a pin or something in an air hole to get it started initially as they were tight and needed to break in. Also, no need to tighten a lot either direction, just finger tighten. Seems confusing at first, but it will be an automatic and thoughtless process once you get it.