Has anyone had luck finding replacement pan head bolts for the windshield hinges on a early CJ5? I've searched everywhere locally in Dallas and I've only been able to find 5/15-18 and these are 5/16-24. I haven't had any luck online. I had a few that stripped on removal. Grainger, Napa, Fastenal, Ace hardware, and nuts and bolts all failed me. Thanks