I'm trying to find my actual weight sticker on my 2010 31bdss. I'm told to look for a yellow sticker with the weight. The only yellow sticker I can find is on the door frame which says that the load should not exceed 2170 lbs. The gvw of the trailer is 8600, so if I subtract is that the actual build weight? 8600-2170=6430 or is there another sticker i should look for?