Ford will cover it one time with in the first 12 month or 12,000 miles after that it is at your expense.
You should go ahead and have it done ASAP as the cab chassis is aligned when it leaves Fords plant, but then the camper conversion is done changing things a bit. The manufactures rarely if ever take care of having the unit realigned before delivery to the retail end of the production.
2013 Ford F350 FX4 4x4 PSD
2013 Wildcat 353LS
2015 Day/Nights Camped 5
2014 Day/Nights Camped 29