My dinette table is less wobbly now. It also has a "leaf" to give more space.

[RV Squirrel]

We have a CL 14DBS with a small wobbly dinette table.  I was hoping to do something that would make the table more sturdy, while allowing us to insert a table "leaf" to have a little more space when we needed it.  To do this, I started by mounting a bracket onto the side of the slideout (Fig 1).  I was careful to find the location of the aluminum tubes inside the wall.  I made the bracket out of sheet PVC (NOTE:  burning PVC can emit dioxin, a poisonous gas... see caveat in this post).  The bracket has holes in the front that contain ¾" aluminum tubes that will be used to sturdy the table.  I covered the top with laminate that I had left over from work that I had done on countertops in the kitchen of our house, so that it could operate as a place to put your coffee when the table is removed (Fig 2).

Underneath the tabletop, I mounted a thick piece of material with aluminum tubes going through it (Fig 3).  When seated on the pole in the dinette, these tubes line up with the tubes in the mounting bracket (Fig 4).  I made inserts (Fig 5) that slide inside the aluminum tubes to hold the table top aligned with the mounting bracket (Fig 6).  The inserts were made from copper ½" pipe with nylon washers on the tip.  When they are inserted, the table does not wobble or tilt forward or backward, since the copper tubes slide smoothly/snuggly into the aluminum pipes.  This keeps the table sturdy!  When I'm not using these inserts, I keep them stored in the frame of the dinette bench (Fig 7).

I made a table extension (Fig eight) that slides into the front side of the table (Fig 9).  Figures 10 and 11 show what it looks like with the extension in place.  The extension is a little narrower than the table so that it will fit between the benches when the dinette is used as an extra bed. 

When the extension is not being used, it can be slid underneath the table.  I made grooves in the bottom of the extension (Fig 12) to allow it to be stored underneath the table without interfering with the large aluminum flange used to mount the tabletop to the pole.  To store the extension, flip it upside down and slide it into the aluminum poles underneath the table (Fig 13).  The copper pipes go through the aluminum tubing underneath the table, and into the aluminum bracket that was mounted to the wall.  This keeps the table sturdy.  Figures 14 and 15 show the table with the extension stored.