Wizard Sliding Doors Repairs is Sydney's specialist sliding door repair business. We provide an affordable solution that makes your sliding door work like new. Wizard are authorized suppliers and installers of the Australian Innovation Patented Miracle Stainless Steel Replacement Cover Track. The service you can expect from Wizard for under $400 includes. -Replace your old worn out rollers with new heavy duty rollers. -Install a new STAINLESS STEEL track over the old worn out aluminum track. -Ad