Try this as a fix for the noise and wobble.
On the bottom of the OEM hitch frame, drill a 1/4" hole and tap it for a 5/16" screw.
Put in a 5/16" x 3/4" stainless screw which presses hard against the hitch mount. Now there is no wobble at all. It feels welded to the hitch frame. No one will ever be able to steal my hitch mount either, unless they have a proper allen wrench to loosen the hidden bolt.
The whole operation took about 10 minutes with the proper tools.
Tools / Parts needed:
1) Drill with 1/4" drill bit (capable of drilling steel)
2) Tapping set with 5/16" tap
3) 5/16" x 3/4" stainless screw with lock washer[/QUOTE]
Total cost: about $1.00 for the stainless bolt and washer.