Not really
I noticed that some juice had leaked through the 510 connector on the ZAU and the glue that holds that delrin insulator in place broke when I tried to take that metal part off the top of the center post off to clean it out. The center post currently spins around in the atty. Did some research and it seems Zen~ has acknowledged this issue and suggested using Gorilla Glue to fix it on somebody's web show. Supposedly this fixes the leaking through the connector issue as well... Gotta pick some up tomorrow and try to glue it back in.
I did however polish up the Paps and put my AGA-Hydra on it for the time being.
Watch what kind you get if you use gorilla glue. That stuff expands like no tomorrow.
I do know that Mike (Zen) tightened one for someone at vapercon by putting a tiny piece if a business card in with the plastic piece to keep it from turning, but I never had any problems as long as that plastic was seated all the way down / flush..