Stargazerandu - I would be glad to show you how I reinforced the drawers, but before showing this to a trained RV Technician, you may want to ask how they are going to fix it. They might have a kit from FR that does a better job, or a neater job (no exposed screw heads). I am not the worlds best carpenter, so I don't know if I would call mine a "proper fix". A cabinet maker would most likely laugh at my reinforcement, but here is what I did:
Here is what the two frames look like from the factory with the drawers removed. These "U" shaped assemblies only attach at the front face of the cabinet, so this frame that holds the drawer glides is free to flex up and down based on the load you put in the drawer.
On the top drawer, left side, I put a block between the frame and the side paneling of the upper shelf under the sink. I screwed into the frame from inside the cabinet through the panelling.
On the bottom drawer, left side, they do not have the paneling extend down to the bottom of the cabinet under the sink, so I took a piece of wood and screwed it right into the carpeted fenderwell and then screwed that piece of wood into the frame.
For the top and bottom drawers right side I put a piece of wood between the frame and the outer wall of the cabinet (top frame shown, but bottom is done the same way) Here I ran the screw in from the outside of the cabinet (near the entrance door to the trailer), through the wood block and into the drawer frame. This is where a good carpenter or tech may have a better way without leaving exposed screws.
(whoops, there is a 4 picture limit per message)
Here is what the outside of my kitchen cabinet looks like. Note the two exposed screw heads, but hey, at least they are brown and Lucille didn't get mad about the exposed screws!
Again, see what their solution is. Let us see pictures of what they do. If they have a nice sturdy kit that does a better job, maybe it is worth a trip to the nearest Forest River dealer and I will take mine in and let them do the "factory fix", but I am trying to avoid the fun of that!