Moisture coming out
Yes, I should point out that your dome is starting to or is already "clear".
Mine took three firings at about that temp to finally drive the remaining moisture out and "Clear" the first time.
Couple of photos of just how much moisture these things hold when their built.
I don't have a photo, but the area under the oven (wood storage area) had 1/8" of water in it!
The last photo shows it is now ready for the render phases.
-Brick vert smoker, Tuscan wood grill
ECB-sent to the curb!
"When it comes right down to it, you just want to be surrounded by good people and good food."