You can eventually learn to work around not having a scale by eyeballing the set up. The trailer will make the rear bumper height lower and compress rear springs. Obviously don't want headlights pointing to the sky, rear springs fully compressed, or rear tires squatting. Maybe you can stand...
Some good points often missed by others.
I have daily vehicles and a Sunday / travel vehicle. The travel vehicle never makes short hops allowing for moisture to remain in the oil or exhaust system. The high tech "mystery" OLM on this vehicle recently allowed me to go over 2 years...
I think it is too little info to reach that conclusion.
Leaves out axle capability.
Spring rating. Tire load rating. Wheel strength.
Once upon a time I increased a truck's capability by adding spring leafs (+ fixing defective factory leafs) and adding tires with more load rating but this...
I'm no expert but I think your answer is maybe but not likely.
If you can load your trailer with the additional weight split equally and equal distance in front of and in back of the trailer axle then maybe.
Otherwise I think at some point you overload your WDH spring bars and can no longer...
This info may be useless. Years ago Dealers had regional/district reps that visited on some interval they could put you in touch with / in person appointmet to resolve issues. If they still do that it may be a better form of customer service or not.
I feel your pain. Your experience doesn't...