There is an area behind the axle
where the floor feels a bit springier than the rest.
Looking underneath, everywhere the trailer meets the frame there are continuous shims of what appears to be some sort of fiberboard. Where the black water tank sits, there are no shims and the floor is about 3/4" away from the cross member at the front side of the tank. The tank is held by a cross member to the rear and sits against the floor, but the floor is only supported in this area by the tank. The frame cross member towards the front of the tank is not supporting the floor. This may be similar to what Scott experienced with his 5th?
Is this something I should worry about beefing up, or is it the normal assembly for this floor area? Thanks!