http://irollmot.ipower.com/oscom/product_info.php?cPath=26_23&products_id=1312&osCsid=ce4a8eea21b030b2486bbe4e5dd9f1ad
They are dam near impossible to find and that was the cheapest I can dig up
The factory rotors should be 12.2mm min thickness, how low are yours currently?