Runs pretty smoothly, best piece I’ve ever had. Only downside is having to clean this pipe (minimal downside), would suggest buying a cleaning brush, other than that, it’s great.
I will say you need to leave your product at a rough cut, too fine of a grind and it will fall thru the bowl. EVERYTHING ELSE IS GREAT! Where we livery (out in the boonies) everything needs to be tough and durable. This Prometheus is exactly that, Tough and Durable. I have dropped it, knocked it off counters, accidentally ran over it, dogs have taken it once, dropped it in a pond only to find it when drought hit, left it outside, did I mention drop it. Works great after a cleaning every time. Hasn't broken yet and I have even used it as a hammer once. Great purchase worth every single penny. Easy to take apart and clean, replacement parts are affordable (seals and screens, haven't had to replace anything else), no impossible groove t to reach, it is the best pipe ever made.