Yes, brand new....used it 3 times since purchasing in December. There are a few guys on here with the same trailer who don't have towing problems and some that do. They are 6200 lb, 8 lug axles with 16" load range E tires...more than enough axle for the trailer.
2000 lb Sherline scale ordered today from e-Trailer. I'll weigh it this weekend. The only reason the higher airbag pressure would affect sway is because it lifts the front of the trailer higher than level. I have the trailer the lowest I can make it with the longest hitch adapter available for 2.5" receivers. I'll give 20 psi a shot where it's about an inch lower or so and see if it changes anything.
