larryJM wrote:
the key is putting enough force on the frame from the screw jacks and to do that you CANNOT use the screw mechanism on the jack itself you have to use the tongue jack. With around 200 to 500lbs of force on the screw jack it acts much like a solid cinder block with not movement in any plane or direction.
Sorry but that I've found that doesn't work either.
Like others I've tried different amount of weight on the screw jacks and I've tried using more than 4 screw jacks. One thing I found is more weight on the jack doesn't remove all the wobble and the more weight up to the point of lifting the trailer only increases instability.
Our experiences differs.