Over the past 2 days , I have taken the rear springs out of the '40 , disassembled the springs and added another leaf (2nd longest out of a spare spring pack) reassembled everything and took the truck for a test flight this afternoon.
It sits just a little taller , maybe 3/4 inch , but feels much more stable on my trip down a nasty gravel road , I have expectations that it will improve the stability of the truck when the camper is on board .