[rohrmann]

The hydraulic 6 point leveling system functions like a three point system because the landing jacks are plumbed together and each side's middle and rear jacks are plumbed together, so it's unlikely to twist the frame. The electric system has six independent jacks, so if something in that system wasn't working correctly, it's possible to stress the frame. We rarely Manual level, and with the hydraulic system, as long as the front of the trailer is a bit above level, the Auto Level will function well. With the electric system, I watched a rig several years ago that the couple that was trying to set it up spent over two hours trying to level it, and I never did find out what the problem was as they were stressed and exhausted when done.