I am brand new to smoking and have just purchased a Masterbuilt #20070512. I do not know how old it is, but it was unused and in the original packaging. I assembled it yesterday, and I have a question, where does the water bowl go? Does it slide into the flange under the drip deflector? If so, wouldn't the drippings get into the water. And, there is no mention in the user manual as to how much water to use or when to use it. Thanks in advance for your help.