You can de-rate your truck here as well. Some will register their duelly f350 as a class 2 even though it should be a 5 or 6 lets say. Tag places and the auto dealers are not really supposed to go that far with it. I am a class 4a, I could have done a 3 but they should not allow me to do a 2 but they would have, they asked me. BUt, like you, you better not weight more than the class 2... Other wise big fines per pounds over,
Pat, Jen, Heather & Sapphire, the head mouser.
2015 ChevyHD D-Max
2018 Artic Wolf 315tbh8