What are you towing your Jayco 284BHS and the type of hitch you are using for this particular Jayco model?
I just upgraded from a Jayco 264BH and I was pulling with a Tundra V8 and an decent WD with Anti-sway bar, but I am considering upgrading my Hitch WD to an Equalizer WD hitch for this new Jayco 284BHS. I am pulling it with a new 2019 Chevy 1500 Silverado Texas Edition (The grand towing package) and it pulls 12.5K total. Total tongue is 1,100 lbs if I am most mistaken...
I'm pulling a 28bhbe with a 2016 Tundra 4x4 with tow package and an equalizer hitch. Pulls good but I'm still trying to get the hitch tweaked. I have it close.