Completely agreed, however, as with most hobbies, being able to recreate/duplicate the working part is 2/3s the fun. The Trevor 5514 cases I received all had a "working" hev. The parts look exactly like the yuki parts as well. I personally will never perform mix diving, but also know that I like to play rough and deep in the water. The point is, having fun, sourcing parts while trying to remain deep in budget. That is what is all about for me. When I raced old air cooled VWs I knew I didn't have a Porsche 911, but it sure was fun to beat a few at the track, or street.