GeoBoy wrote:
Morsnow, you truck maybe has the crowned floor of the bed problem. If you measure the flatness of the bed, front to back, with an 8’ straight edge you will see the problem. I cut a piece of 1/2” thick rubber stall mat and placed it in the rear of the bed and eliminated the problem.
It does have the crown, I discovered that soon after buying my camper. I have two rubber truck mud flaps under the rear half of the bed with the full length rubber bed mat on top of them to offset the crown. The camper now sits level, the cab of my truck does have a noticeable slope which is normal.