Originally Posted by JIMandPJ
A closer look at the frame and I found some dents in the lower portion of the C Channel just in front of the forward wheel and just after the rear wheel. I'm still thinking the frame sags too much but I can almost lift the rear bumper enough to flatten it out front to rear. I think these kinks are at the jacking points. Any advise out there??
The last shot is looking from the right rear bumper forward.
Once you get the sub floor off the frame it will droop a bit. The trick is to make sure that the new sub floor is dead level when you bolt it down. The pictures are fulcrum points I believe. It happens when the frame bounces up and down. If the sub floor fails then the frame bounces more violently. My solution was to box those areas by welding C channel in those areas like this . If you want pics I can snap a couple, just did it this weekend.