<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">dave. Larry r told me that the 14 saucer doesn't fit securely on the brackets where the pan fits. I need to know this because I am going to get my saucer in a couple of days. </div></BLOCKQUOTE>
I doubt that clay saucers are standardized from one store to the next, and furthermore, there seems to be some variance in the way that WSM's are constructed. Thus, I don't know that it would be accurate to make global statements about whether a 14 inch saucer fits on the brackets or not. It may or may not. It may or may not give you air flow under the bottom rack.
Steve, I think you are correct to assume that some air flow is good between your heat sink and bottom rack.
My suggestion would be to just keep you receipt when you buy a saucer, try and see if it fits. If not, take it back and exchange it for a different one.