Not sure about a towbar fitter but there's a large caravan sales and repair place on the Pacific Hwy at Nabiac, just south of Taree, called Great Lakes Caravans. They have a web site with contact details. I had a new Fiamma awning installed there last week and was happy with the service. Maybe they could suggest someone if they don't do the job themselves.

Arthur, give Taree Off Road a try.....0265512479

No luck, give,

Autobarn 0265577388 OR Autopro 0265526275 a try.

Good luck.