Will, that's a nice looking camper. We have reservations for the next two weekends at two different state parks nearby. We've only got to camp twice so far this year, so I'm looking forward to it.
As for the water heater, if this is the first time you've used it this year, it isn't unusual for it to take two or three tries to get it to light due to having to purge the air out of the propane lines. If the burner is not burning clean once it does light, the air shutter is easily adjustable. Procedures are readily available on the internet.
Mike in Tennessee
2007 Cruiser 30QB
2008 Ford F250 Lariat 4x4 6.4 Powerstroke
Valley 16K slider
Ride-Rite air bags