Bed Rails Making Contact with 5th Wheel

[Kevin D Pem]

Does raising the nose of a 5th wheel trailer in relation to the truck bed change the pin loading. Put another way, does raising the 5th wheel connection shift weight rearward? Is this a small shift or more significant?
My understanding is you want 15-20% of trailer weight on the pin for smooth towing.

If you raise the nose of your 40 ft rig 4 inches the effective shift of a 10 ft high rig at the roof line will be 1 inch. As most of that weight is as low as is practical to keep center of gravity low one would have the weight shifted at most 1/480 th back from original placement of weight at most, at the roof line.

That is easily compensated for.