Damn it if I didn't forget the companys name who sells the bracket/bushing combo that was included in ever Aussie bar purchase.
I assume your mounts are U shaped, bole up on each end adn you have a red urethane busihing that is grooved?
If so, you can go to said company and buy a new bracket/bushing set. $15 shipped I think or inquire about new bushings for the Stock SVT 18mm bar or whatever size bar you are using now that will fit the U bracket you already have. All there U brackets come in two sizes. Type A or Type B. The bushing cutout size changes but not the bracket size.
I hope that helps!