Instead of enlarging the entire frame, they could probably done a little "kick out" in the 3-5 foot zone of the axle and slide out, and that would have been sufficient to fix both of those issues. Saddly, that's not the way it's gone.

If the frame had been made wider by about a foot, there would be no floor sag, and it would reduce and mostly eliminate the axle issue. 

The problem for Forrest River is that making the frame wider would make the trailer much heavier, and would also create support issues in the center/floor area, which would require additional cross members, and make it heavier still.

Both issues can be mitigated at an additional cost, and probably with some additional weight.

I’m new to the scene and not as well versed as others, but I have read on here and the FB group that if it’s sagging too much, you will need to jack it up, let it sit and adjust, and then try some more. Where are you located in Texas? I would be curious to see what the sag looks like and what to look out for.

I’ll wait to see if FR or Lippert recommend anything, but I will probably brace it and add outriggers as a precaution. If my axle has lost its camber or is not clocked correctly, I will probably put a new axle on as well. 

WDH?

I called and emailed FR and received two calls this morning. They emailed me a PDF with instructions on what photos and info I will need to send back to them. I will have to move the trailer out to get the photos needed but the main thing is the axle ID. I sent a photo of that to see if I have the axle that they are saying causes this issue. Interesting is that they also ask about the use of a WDH and what type and brand, so they are tracking other details that might play into the failures. I’ll update when I hear back. 

Being a 2016, you are probably not in that program window either but since you didn't have a sneeky water leak that no one could seem to find until too late, your floors are fine.  Might be a good idea though to do the outriggers to be on the safe side.  They are available from Forest River for under $10 per and I think their instructions call for 4 of them.

Many happy miles with your new "to you" POD!

Jack

The issue is that the body of the 'pod is cantilevered out about a half foot past the support of the frame. The only thing holding up the body is the stiffness of floor. Adding a slide out magnifies the problem. Adding the outriggers adds the support needed. 

Separately, there is a similar issue with the axle. The axle support is way inboard and creates torsion on the axles because the wheels are so far out.

Both of these issues would not exist if the frame had been made wider. However, that would have meant additional support would have to have been made in the middle of the frame to support the floor, and that may have pushed the weight up too far.

Patrick