you can also just go out and get the good stuff. getchya one these [link=http://www.rcscrewz.com/product_info.php/stainless-screw-kits-heli/align-heli-screw-kits/p/alg005-align-trex-500-series-stainless-steel-screw-kit/cPath/350_295/products_id/2745]rc screwz[/link] kits. has all stainless steel screws for the 500, i have a set, and ya dont have to worry about strippin those out.......... also, the thorp mip hex drivers are very sturdy, no strippin those suckers either............