I am working on rebuilding my 1964 starcraft aluminum 18' holiday I am missing the ends on my rubrails they are aluminum not plastic as I have found on different sites . Also I removed a used glass walkthrough windshield off of an old rinell boat to replace the plastic one on my old boat. When I was removing the screws/ bolts that held the old windshield in place several of them broke off as they were very rusted. The bolts slide in a channel on the bottom of the windshield they are kind of rounded on the bottom and flat on the sides where can I find replacements? my local hardware store has a large selection of bolts but nothing like this. thanks for any info