-boler manual recommends a weight distribution hitch
WD systems require 2" receiver for that so upgraded to Class III. The
boler is about 2500 lbs. Empty tongue is just over 200 lbs and class 1 limit is 200 lbs. Hitch upgrade gives us lots of room.
-Tansaxle cooler was told needed by all (dealer, rv lots, and all in the know) Was told "it is about the air we push not weight when trailer is under 4000 lbs."
In the end we all have to drive safe.