Last night I had a poop in my pants experience. I was towing my trailer down the interstate and it (single axle 6 X 8 trailer) started to sway uncontrollably. I was towing it with my shortbed 78 K10 and the whole truck started to shake. I tried to load the trailer as far forward as I could with a 36" lawn dethatcher, a 54" commercial walk behind mower, and a 5 gal gas can pushed as far forward as I could. I noticed that it would start when I hit certain speeds, when I would hit a bump just right, and when I made sudden certain movements. The shakes produced by the trailer were similar to those I feel with my 80 that has DW. From what I have learned about trailer sway is that single axles are more likely to develop it as they are not as stable as multi-axle trailers, tail weight will add to it, and it is due to the laws of physics (not something "wrong" with the trailer or components) and the only way to help solve it is by using anti-sway controls (essentially dampening shocks.......similar to steering stabilizers). Now what if this is the case with steering DW. Something inherent that is non hydraulic induced (trailer DW is definitely not hydraulic and others have replaced all the hydraulic components and still have front axle DW) and the only cure is to help dampen it? I know that is not the answer everyone is looking for, but after all this back and forth of DW it has me thinking. I was hoping it may be hydraulic (as somebody hypothesized) but not I'm not so sure that will/can cure it. Also the design of the D60 is different from a 10 bolt or 44 and uses taller perches different tube diameters, MAYBE different caster/camber and I forget the other geometry terms for front end travel. Maybe the design has something inherent that puts similar forces on the front axle similar to the forces put on a single axle trailer (like a heavy tail load). Different mods to a 10 bolt or D44 may contribute in the same way (or as they wear), since people with those axles have said they have experienced DW (just not nearly as frequently or in the same numbers.....number of D44 and C10 equipped rigs vs. rigs equipped with D60's and the % of each that experience DW). Trailers sway side to side as the axle and wheels are fixed and the front axle steers steers side to side as it is easier to turn the tires than it is to move the axle side to side due to a front axle having steering knuckles and a trailer axle not?????? Just a thought?