Odd purge valve
I never paid much attention to it but on my MYA Acrylic the purge valve doesn't seem to work like it does for my Egyptian. With the Egyptian when you blow into the hose smoke will come out the valve but with the MYA nothing happens. This doesn't hinder my smoking but still kinda odd.
Also when I tried the second hose adapter I couldn't get any smoke, they both have the auto seal bearing (except one is an airsoft bb....)