Best of luck with the 38, mine has been getting quite the workout since I got it in September.
A few things I did to mine:
Added gasket to the doors, (It leaked quite a bit), I used this -
http://www.amazon.com/gp/product/B00CI7A69I/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
Tossed the chip pan in favor of a cast iron skillet for using chunks - note the supports for the chip tray were not quite up to the weight of the skillet, luckily I had an elevated cast grate from my grill side burner that fit perfectly.
Filled the water pan with sand and wrapped in foil.
Did the needle valve mod. The factory knob has a bit of play, at least mine did. I can dial it in within 5 degrees or so by just tapping the factory knob, but if I want to be overly precise I fine tune it with the needle valve.
Converted to natural gas, because I have a line right where the 38 sits on the deck.
Looking forward to seeing some Q-View from the 38 when you get it going!