Finally found some time to spend at the rig. We measured the distance from the rear of the pin box to the frame just above the jacks (both sides) with load on the jacks and load on the pin box. The measurements were the same on both sides with only a 1/2-inch increase when the load was transferred to the pin box. I am comfortable with that. I also did a thorough inspection of all visible frame components while the load was on the pin box. There is no visible cracking. I also looked closely at the sides and did not see any cracking or open caulk joints.
I measured the distance from the front/top of the pin box to the underside of the nose piece holding the level as a straight edge, not necessary level (because the angle of the nose changed when the load was transferred). This measurement decreased 1/2 inch also when the load was transferred to the pin box. The measurement with the load on the jacks is 8 3/8. The measurement with the load on the pin box is 7 7/8.
This would explain why the divider wall in the front closet buckles slightly when the load is on the pin box.
Is there any reason to be concerned about this?
Also, the gap above the pin box closes when the weight is transferred.
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Jay, Bobbie, Daisy, Rosie
2018 Montana High Country 345RL
2018 Chevrolet Silverado 3500HD LTZ DRW