Are you still using your awesome homemade HearthKit? I tried it this weekend. I unfortunately put my tiles on the oven base and and at 550, the tiles got up to 680 and burned the bottom of my pizza. On the second pizza, I changed the temp to 450 and my tiles got to around 550 and the bottom turned out great but the top wasn't as crispy as I wanted (even though the kids liked it).
I know what I need to do, I think, but wanted to talk to you. I am going to move my tiles up to the middle of my oven and preheat at 550 - as you illustrate. The tiles should get at around 550. But I wanted to know if you still put the oven on broil as soon as put your pizza in? I am afraid it will burn the top of my pizza but I'm up for it if does the trick. I think I need to have the top of my oven at around 700 to have the top crust brown nicely but not quite sure how to go about producing that kind of heat. I was thinking of buying a stone and putting int on the top rack to radiant the heat downward. Any ideas?