I'd like to give a huge THANK YOU to Brad, the Moderator over the Truck Campers forum for his assistance with this thread. Thanks also to RVcrazed51 for his request for this thread. Post photos ...
Here is our 5th wheel after flipping axles and adding equiflex suspension. Rides much more acceptably and, so far, hasn't dinged the truck bed rail again.
Have hitch on rear also so will be trying towing fishing boat as soon as RVing season arrives