Ordered some 3/8" Time-Sert Kit from Brian Fulton at Pendergrass Tool (www.pendergrasstool.com). When I go into the job I found I needed 7/16 Time-Serts due to the botched up work done previously. When I called Brian, he didn't hesitate to accept the kit back in return for the 7/16 kit I needed. NO restocking fee. NO hassle.