We have a 2019 XLT Max, non HD tow, 2WD. We added the sumo springs and the OEM brake controller, activated it w/ Forscan and have had zero issues. I have WD hitch that's setup to keep both the Expy and trailer level. Our TT is a 2018 Keystone Passport 2890RL. Never tow with more than a few gallons in the freshwater tank (for quick stop emergencies) and we are nowhere near the max load for the trailer. The first trip we made with the Expy was a 750 mile trip each way from FL to MO. I watched the trans temp from time to time, and it never got out of spec, and really only raised up by a minimal amount vs no trailer. Stopped at a CAT scale on the way up, and on the way back (wanted to check Christmas gift differences lol!) and we were about 5780 on the way up, and 6100 on the way back, and managed to move weight off the rear axle to front axle of the Expy on the way back, which may have been a difference in how the trailer was loaded. Never experienced any sway problems, or anything uncomfortable whatsoever. We'll be taking it to GA next month, so much shorter trip.