OK, here's the deal. I loaded up the egg yesterday to cook a big rack of spare ribs. (3-2-1 method). They turned out perfect! After I prepped the ribs and thru them on the grill I whipped up a batch of focacchia dough with fresh rosemary, basil, oregano, garlic & evoo. I mixed that in with the dough, and then made the topping with the above plus some asiago cheese and sundried tomatoes. When the ribs were done, and the focacchia rose a few times, I opened up the vents of the egg, got it to 400 or so and put on the focacchia for 25 minutes. Once that was done, I tried to get the last couple degrees of heat out of the egg and cook my 'brined' baked potatoes, but I was out of lump. I finished them up on the gasser.
Anyway, since the lump was pretty much gone, I took the vent cap off and opened the bottom vent to burn the rest. Then I planned on vacuuming the ash this evening. Well, I forgot about it, and left it opened all night. And...you guessed it, big rain storm! When I woke up @ 6 am in a panic, I went out and checked it. There wasn't any standing water in it, and it didn't seem wet, but I know the rain had to get in. My gas grill, that I didn't cover, got filled with rain water in the drip tray. So, what's the plan? Pull out the platesetter, upper ring & fire box & set in the sun? Don't worry about it? I just don't want to fire it up and it crack cause theres moisture in the ceramic.