Hey Barry,
check this out:
http://www.keystone-montana.com/inde...pecs&year=2007
It shows different... Now you know why actual weight and certification stickers are VERY important.
We are trying to do this without the 3400RL in front of us. When you see the actual unit check the front driver's side of the rig for the certification sticker that will state the actual numbers for the particular unit. Another location for a certification sticker is an upper kitchen cabinet door which will also list weights for the particular rig too.
You have the certification sticker for the truck but need to weigh it soon. On the rig all you have is unclear marketing/sales documentation. The rig's stickers are the ones that count, because most times they will have considered the actual installed options.
It is not unusual for marketing brochures, sales materials and the i-net to be different. The certification sticker is the best thing to START with followed by your actual weight measured with a truck scale.
Welcome to the world of RV weight complexities.