Purchased a new 2020 Aliner. Unit was as advertised except 1 thing which turned out to be a serious defect. The jack wheel would lift off the ground while turning the jack handle and trailer (unloaded) remained horizontal. Since new and 1st RV seemed strange but decided that must be normal? After 1200 towed miles I found out the RV had a major axle defect. Whenever our tow vehicle and RV were both on a flat campground pad or in garage no problem hooking up. Tow vehicle 2" ball was at recommended by Aliner 18" and Aliner coupler (ball receiver and latching clamp) were at 16". However we found out when tow vehicle is on a slight hill, the tow vehicle ball was lower than the Aliner coupler. Remember when I said the jack wheel would lift off ground while turning jack handle. That results in making it impossible to lower the RV coupler and latch below horizontal. Meaning, we had to jack up tow vehicle to connect and get on our way. After being evaluated by a certified RV repair shop, turns out Aliner shipped our RV with a defective torsion axle. The 4 synthetic rubber axle cushions on 1 or both independent 13" wheels were seized. The RV would not pivot forward as designed nor backward. The RV was pinned at horizontal resulting in 0 tongue weight. Very unsafe to haul 2,000 pounds with 0 tongue weight. Phoenix's Tom's Camperland never checks tongue weight before delivery. Appears neither does Aliner check tongue weight before shipment from Pennsylvania. So caution when buying an Aliner. In our case, our 1st RV became a life threatening event The RV repair shop described our Aliner as a deathtrap.