Fifth Wheel Towing Set Up Changes (New Truck Much Higher)

You could have adjustable spring hangers. If not than a subframe built under the trailer frame. I had a 4" lift built by a tractor trailer shop and they also added cross members on the spring hangers for added strength. Worked out great. Good luck.

I still think that trying to lower your TV, will be more expensive than raising your trailers height. As for trailer stability, the article explained this also. As you have noticed, adjusting your pin box and hitch will not work in correcting this problem.
Just think, your truck bed height is so many inches off the ground. Your trailers snout is so many inches off the ground, when level. Thus if you do not have a least that magical 6" between these measurements, NO amount of adjusting the pin box, ETC will solve your problem. Either the trailer has to be adjusted higher, or the truck lowered.

I talked to someone who said my springs are likely already on top of my trailer axle(I'd have to drive out and check for sure). But if this is the case I wouldn't be able to flip the axle, but would rather have to have a sub-frame built to get the extra height (~$2500 in Calgary Alberta).

Another option he said was to get the truck lowered as I'm not using it for 4x4 / off-roading. He said a dealer / shop could lower the front 2" and the rear 4" to make it line up with the trailer better (~$500). Has anyone ever heard of this option? Any thoughts on it?

Thanks
Dan

Thanks...Is this the normal resolution to this kind of problem? Would there be any significant stability changes in the trailer while towing or parked?

WELCOME to today's trucks. If you can get a copy of TRAILER LIFE April 2013, there is an article on page 30 that shows how to flip these axles, and increase your trailer height by 5 or more inches, depending upon your needs. It also will be able to run larger tires if necessary.