I am towing 32' with a 122" wheelbase SUV that brings me near the SUV's capacity.
On paper I am over rear axle weight and 100lbs over gross vehicle weight (basically 100 over payload)
When connected with the WDH applied I am no where near rear axle weight and I am under gross vehicle weight as well.
Point being, do not be so quick to judge and claim the OP is over spec. On the scale, with a WDH, things can change and no "legal" weight police have nothing to balk at...on paper.
NOW...all that said...there is another problem.
The Propride, like the Hensley have tongue weight maxumums of 1400lbs. There is no way this 40ft trailer is under that.
The Hensley and Propride have multiple failure points but going over max tongue weight is just asking for the unit to self destruct at the worst moment.
OP...I am not on the weight police band wagon and rarely do I jump on the "need a bigger truck" bandwagon often found on this site. THIS SITUATION IS AN EXCEPTION. You very likely need a bigger truck.
I'd get that tongue on a certified scale ASAP.