I measured my tongue weight at 510 lbs. We carry a lot of stuff and I suspect my loaded weight is between 4500 and 5000 lbs. It does seem that the 2922 has more reported sway issues, maybe because of the extra 2ft behind the axle. At any rate, I don't think the tongue weight is too light. I really don't know what causes it. I just know that I will not tow this trailer without the WDH. Been there, done that...scared the peewaddy out of me
This is the only model Trailmanor I have towed, but have been towing since 1999. This is the only one with significant sway issues.
I know not many folks have had this issue, but the time to find out you do....is not during a highway emergency.