After riding around I finally found the source of a rattle that's bothered me.  It's where the two 3/8" rods with the springs around them, come up thru the plate.  I put a couple of plastic bushings in from the spring side to quite it down.(see pic)  Originally was there a bushing in it and mine was forgotten by someone, or do they all rattle there?  Also, just out of curiosity, why did they use a nut with a little wire sticking out of it on the backside of the front pivot bolt/bushing?  Nylock nuts not "invented" yet?

Does anyone know if the brass plug/cap, next to the idle speed screw is hiding the air bleed/idle mixture screw underneath? I would like to adjust the idle mixture but no screw is visable and was wondering if that's where it's located and if it can be removed, and how?  Thanks if anyone can help. (its the brass cap just underneath the mounting stud)