turns out i've got a bad plug. i swapped them and it was happening to the other side. i popped in some new ones and she fired right up. now however...i changed out the needle valve because i was leaking fuel all over the place from the overflow tubes. i pulled out the throttle, needle, and top. put them aside. then disconnected the middle tube, fuel, and air filters. i got the carbs off one at a time. turned the carbs upside down and pulled the float chambers off. i proceeded to replace the float needles being careful to put everything back together the way it was. while i was in there i also changed out the main jet from a 260 to a 250. anyway...i put everything back together and went to fire it up. nothing. again. nothing. i thought maybe i didn't have any fuel in the carb and in the lines so i left the tap open for about 20 minutes. then i tried it again. this time she fired up but the rpms shot right up to about 4000rpm and i immediately turned her off. so i checked the plugs and one was wet. let them dry and tried again. again the rpms shot up and i turned it off. so...i pulled them off again and made sure that there weren't any air leaks. now when i went to start her she tried to start and wouldn't. i checked the battery and it was dead. so now im charging it and am going to try again in the morning. now...as far as the rpm charge...what gives? where could i have an air leak? the boots? they were fine before i pulled the carbs off. please...anyone help me out.
74 Yamaha RD350 cafe