87 gl carb info needed desperately

my gl has been having fuel issues when it gets warm.starves for gas. any hill makes it jerkwith whiplash frenzy then die. will start with clutch in but dies at any attempt to move.

replaced fuel filter, pump seems to be working so I have taken the carb off and there was lotsa crud in the reservior and the needle valve its dark and I hope no parts sprang off but need some sort of diagram to check if I'm doing it right. need to fix to get to work in morn. pleeeeze help!!!!

does anyone know where I can look at a carb diagram online?