Last night I did some more testing, started at 42-43° to see how long it would take to get to max temp. LHT and HHT remained at factory settings for this test. I did this video different than the first so it is complete, tho it gets a little confusing towards the end. I had started cooling down the grill, then had the thought to check temp on the top rack and heated it back up. That's why I talk about the HHT shutting off at both 575° and 707°. Hope you enjoy, Russ I'm getting better
http://www.youtube.com/watch?v=riHBKGJqwfQ