If that upper chimney oring is not sealing it will cause dry hits, been there done that.
one easy way to tell is cover the 4 air holes in the base try to take a pull on the tank and quickly stick your tongue over the drip tip, it should hold a vacuum
if not you are not pulling enough juice into the chamber because of a vacuum leak.
If you don't believe it, remove your upper chimney oring and try it for yourself.
New Lemo Drop came in today. I'm examining it and I'm starting to get a little perturbed. I haven't tried it yet because I'm afraid - based on what I've read here - that it will probably just flood and make a mess regardless of what kind of build I put in there.
Here's the rundown:
If I screw the upper chimney into the top cap securely and do the "tongue test" - with or without a drip test - I get a decent seal.
If I then screw the lower chimney onto the upper chimney and do the "tongue test", I still get a decent seal.
However, if I then assemble the rest of the parts, close off the 4 holes in the base, and repeat the tongue test I cannot get a vacuum. This is so regardless of how hard I try to screw the glass down. I've tried screwing the glass down hard enough that I had difficulty unscrewing the assembly.
The tongue test also fails when I assemble the Lemo by first screwing the bottom chimney into the build deck, then screwing the top chimney into the bottom chimney, the completing the rest of the assembly by screwing down the glass and base. (4 holes closed.)
In case it matters, if I screw the upper chimney firmly into the top cap, but screw the lower chimney into the deck section, then try to assemble the unit there the top and bottom chimney sections do not completely screw together. Someone posted a picture like that somewhere earlier in this thread, but I haven't found it yet.
Both silicone o-rings for the glass are present, as well as the o-ring that sits on the top chimney, just below the threads that screw into the top cap.
I'm supposed to get a vacuum when the unit is assembled but empty right?
Any ideas?
My guess at this point is that the glass section is a little too tall. (Nope, see EDIT below). I'd appreciate it if someone could measure their glass section; mine is approximately 24mm or about 15/16th" tall. Maybe I should add another o-ring to the top chimney? BTW, I checked the 2 spare small o-rings, and to me the one that came already installed on the top chimney seems a bit more bulky than the spares.
A little frustrated at the moment.
PS: The GOOD news is that I'm no longer concerned about airflow. It's not anywhere near as open as I thought it might be. I'm pretty sure I can deal with it even wide-open.
EDIT: Nope it's not the tank. IBtanked replacement glass is 24mm. Aside: this thing smells and tastes of machine oil and will need a wash if I'm going to try it as is.