Our 2014 17FQ should be identical to yours with some minor changes between the model years.
1. On ours the BW dump pivots from horizontal to nearly straight down. I believe this allows it to gain additional clearance unless you're "dumping". The pivot joint is tight enough it won't rattle out of position. If yours won't move then maybe it got a bit too much glue during assembly.
2. So far the tank sensors seem to read fairly accurately but I take them as a ballpark reading at best. You said the instructions state "that the ground sensor be at least 10" from the other sensors". Is there any way to move the sensors?
3. Thanks for the info on the spacing. I need to take a close look at our refrigerator as it often shuts down when in propane mode. We're 2 1/2 hours and three mountain passes from the dealer so I want to eliminate any simple fix before hauling it back there for service. As for the gap around the fridge could this be filled with Styrofoam? It might have the additional benefit of providing greater insulation. I do agree that the fit should be what the fridge manufacturer calls for.
Overall we've been pretty satisfied with the fit & finish of the camper. But it is disappointing to find any quality issues. Heck, my brand new Nissan Frontier came with rear tailgate support cables that were about an inch different in length. How hard is it to cut the cables to the same length!
Barry, MSgt, USAF, Ret. & Rose
2017 Ford F150 w/ 3.5 EB
2014 Coachmen Viking 17FQ