I bought a 1981 cx500 i have a great imagintaion and decided to make a build out of it. After getting halfway through the build the bike started acting up. I tore out the air box and replaced with pod filters, should i have adjusted my air flow mix since i changed the amount of air coming in? I tried adjusting the mixture screw and when i loosened the screw i heard a pop! Turns out the pop was the piece around the adjustment screw breaking off!!! The only carb i can find is $194! Is there anyway to bondo this piece back on or maybe jb weld??? any help appreciated thanks in advance!!!