Agree with weighing your trucks front and rear axle while hooked to the trailer and road ready.
Your 2500 has a 6000 rawr for carrying all the load in the bed.
Many newer gen 2500 Ram trucks rear axle can weigh in the 3000 lb range leaving around 3000 lb in the bed payload.
Overloaded rear axle (tires/wheels/rear spring pack) and worn out shocks on a truck with rear coil springs can make a bad handling combo.
A 2500 with a 6k rawr isn't a good replacement for a one ton srw truck with a 7230 rawr = a 1230 lb loss for carrying weight in the bed.
A 5th wheel trailer adds little to no weight on the trucks front axle.
Get all the trucks axle weights first and go from there.
"good judgment comes from experience, and a lot of that comes from bad judgment" ............ Will Rogers
'03 2500 QC Dodge/Cummins HO 3.73 6 speed manual Jacobs Westach
'97 Park Avanue 28' 5er 11200 two slides