I had good luck doing this by running two beads of weld down the length of
the hitch stub on two adjacent sides of the stub, then grind it down to a
"just right - slide in, but no wobble" fit. *It is amazing how that can
reduce sway, and quiet down the ride down the road.

Anyone else with a sway problem have a sloppy fitting hitch - receiver fit?
Anyone do something to tighten up the fit?


Yes, get an "anti-rattle" J bolt device for your receiver for about
$23. from Redtrailers.com

See it at http://www.redtrailers.com/ShowItem.asp?id=63201

You may need a shop to drill an extra hole in the side of your steel
hitch.
Includes a lock device.

A fellow Texas glider pilot suggested it. It tightens up nicely and
stops the rattling.
This must help with sway -- but I really don't have much sway because
I don't drive my glider trailers (5) over 60 MPH.


Burt
"The Turtle", just easin' on down the road
from Marfa, in southwest Texas, USA