I have the 55 and the only cleaning I do to the inside is to scrape the walls with something like an old credit card when I see a heavy build up. You really don't want to do much more since it's the seasoning that makes Q so good.
I bought a concrete tub from Home Depot that I use to clean my racks. It's big enough for my FEC racks as well. I buy Simple Green by the gallon at Wally World and it does a great job on the grease. Let your racks soak in the tub for a few hours with water and Simple Green and they'll clean right up.
Oh...and welcome to the forum!