Towing with Class A diesel pusher

Slojoe72 wrote:
So I recently aquired a 1999 - 40' Holiday Rambler and Im currently using to tow my 32' race car trailer (10-11k lbs) to the track. Does great and I may be expecting to much out of the 78' ride but it has a little sway to her when trucks go by and worse around 65-70mph. I did recently replace all 10 rear suspension bushings, due to panhard bar bushing being gone. I also had an alignment just before the bushings. The hitch has load leveler bars but not with the sway control. Pervious tow vehicle Crew cab dually needed nothing for sway and was great. With the dually the trailer tounge was a little lower then with motorhome (level). I did try to put a little more tounge weight with the MH moving a 1000lbs golf cart up about 2 feet, and a 2500lbs car about 18" forward. It really didn't change the sway feeling. The chassis is an 8 airbag suspension.

just looking for suggestion on what to make it better... thinking
shocks?
installing aftermarket swaybars?
adding a sway control to current hitch?

if you have a suggestion, please include brands and why.
thanks in advance.

How does it handle at 50 - 55mph and one must consider the handling capabilities of something that size, no matter what you might add to improve it? Even if it does seem safe and OK, it's not near what you might expect from your average race car. Just sayin.....
Also what might be your hitch weight rating and hopefully it's one of the 1000lb models, rather than the average 500lb products?