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 ...
Get the RV raised up on blocks under the tires until it's level add the thickness of the blocks to the distance the bed clearance needs to raise, that is how much the suspension needs to raise.
My RV has 3" risers and my high point is 13' 5" with no issues.