Just got an RT-590. I’ve seen instructions for smokey/cooking burgers that say use lowest temp for two hours and then raise the temp to 400 degrees for 4 minutes. Question. Since it will take a while to get the temp up to 400, do you just leave the burgers on the grill while this is happening and then take them out 4 minutes after it reaches 400 ? The instructions weren’t clear on that. Any other tricks of the trade would also be appreciated. Thanks.