My 04 blast wont idle at stop lights. I have to stay on the gas a bit to keep it going but if I give it to much then the carb will backfire and it will stall. It sat for a while and I ran seafoam through it for the first three tanks and it cleaned up but it still does this when idling, also when I start it up with the kickstand down I cant let the clutch out or it will stall even in neutral, is this normal ?