Is there a company somewhere that sells small sailing hardware (screws, pins, etc)over the internet or via catalog? I'm looking to replace some minor parts on my H170, particularly the thumb screw that connects the boom vang tackle to the boom shackle (Harken). I've tried several sites, including Harken's, without finding anyone who offers minor spare parts. And being in a motor boat town there are no sailboat shops in the local area. Any suggestions would be appreciated.