"I know about water damage with them, but are there any specific locations to double check on this model?"
Everywhere, If you do have aluminum framing then I think you did well, I had a 2000 (in sig) and it had a soft corner (wood) where the valve gates are but check every corner, door, cabinet and window, high and low.
In ours there was a phone jack style of a corded remote control (also in the cabinet with the valve gates?), and if I let it sit for more than a minute I had to unplug and plug back in to remote to get the signal but for a camper this size you really want power jacks IMHO so hopefully you have a jack that looks like you could plug a phone into it.
You can get a complete power jack system that is wireless remote, not giving those away but well worth having.
Good luck!