Thanks for the pics and info. B239 is the part number for the bracket that holds the end of the Roadmaster Aux Anti-Sway bar. Here is a link you what you have: http://roadmasterinc.com/pdfinst/1139-143.pdf
It contains lubrication info that should be helpful.
Just above your shiny new sway bar is the link for the factor bar. Its a z-bracket set up so all you need to do is unbolt it and turn it around so the link attaches to the hole closest to the axle. That will help reduce, or stabilize if you prefer, the roll of the box.
If you still have "tail wag" or yaw, and/or if you tow anything, you will need a panhard bar or track bar (same thing, different name). You already have one on the front from the factory. What that does is prevents the side to side movement of the rear axle itself. It connects the axle to the frame. Those giant leaf springs have way too much lateral movement to produce stability. The addition of the track bar will also work with your safetplus steering dampner (I have the same one) to reduce oversteering.
Don't worry about terminology or not being up to speed on everything F-53. There are lots of folks with experience to share that could help you make your coach an enjoyable experience.