Im realativly new to the whole two wheeled scene but id like to continue gainging knowledge in it so i am having problems getting fuel to a 1985 gs550 that i recently purchased what is the brass fitting on the right hand side of the gas tank and where does the line come from that is supposed to attach to the airbox... the petcock is getting its vacum and fuel is flowing from it so i have eleminated that problem but from there i am clueless..