"When we got back from our trip, I investigated and found that when the manufacture applied the floor insulation, they completely filled the void between the trailer axes and the bottom of the trailer.
This keep the axles from moving upward when hitting normal highway bumps. Thus the springs could not do their job. Trailers have springs for a reason!"
I'm not sure I completely understand this. I don't see how this could be done, or if it could be done, how you could miss the fact that your trailer axles can't move. Color me confused. And even if it could be done, and was done, why wouldn't the insulation have compressed when in contact with the axles.