I just bought a 1981 Suzuki GS 650 GL. It ran fine when I bought it but has slowly declined to the stage it's in now. I've been messing with it for a couple weeks and have changed the spark plugs, new air filters, new battery, oil change and cleaned the carbs it's at the point now were i can get it to start but after a couple seconds it dies abruptly. I've been trying to figure out the original jet size, but have had no luck right now I have 132.5 on the main jet. If anyone knows the original jet size or has any ideas what could be wrong it would be greatly appreciated.