Same here. I think the 3 in 1 WPA bowl is rather small. And the cup screen that I use in there makes it even smaller. So I use this WPA through water, set to 10, as a one hitter quitter.The Glass "honeycomb"? I find it kind of small lately I like to load loosely and if I don't use a steel screen small particles end up in my mouth, so its maybe unnecessary, but most J-Hooks I have seen are 14 mm
With my 18mm WPA, I set the bowl a bit bigger, and use this WPA for longer sessions on a j hook.
@cybrguy
I like the look of the RBT stems since they're shorter than the TM WPA, but I can never find one. The only ones I see, are the nippled RBT stems (Xl8r?), which can be a gamble on whether it'll work or not. If anyone got a link, I'd be interested (US preferably).