acts like it wants to run away

hello im new to the forum but not new to the bikes but this one has me stumped. ok so i was ridding it one day and the battery died while i was ridding it (i would never purposely run it on a dead battery) but i shut it off to talk and when i went to start it, it was dead to the world. so bein i had no way of getting it home i did the stupid thing and push started it. it was backfiring and sputtering the whole way home so i kept it at low rpm. i put a new battery in it and it ran better but now it runs smooth but as soon as i start it, it jumps to about 3 grand at starts climbing, i haven't let it go to see how high it will go i just shut it off when it hits about 5 grand cause either way its not right. so i cant run it long enough to get a good reading on the plugs to see if its running lean or not. i have replaced carb boots, cleaned the carbs, and went through them about 7 times, and yes i cleaned out every port known to man. but it still acts like its running lean,or maby the timing is advancing when it shouldn't i haven't replaced the springs on the counter weights for the timing advance, they look fine but thats not saying their not weak.

i know its something stupid that im just not seeing. and im hoping one of you guys can show me the light. ooo i have went through the whole ignition system and it is all good except for maby the timing advance system. thanks for the help.

lean condition or timing wont allow it to accelerate, it has to be gaining air volume as well maybe the throttle cable has issues

check throttle cables and make sure the idle screw is adjusted properly

If not already done, would use the carb thumb screw to lower the idle, and then assure that the carb mechanism throttle stop is fully closing against the tip of the thumb screw when the carbs are supposed to be at idle position.

Good Fortune!

if i adjust the idle any lower it wont run, i have the carbs set to factory specs because the whole thing is completely stock. and there is nothing wrong with the throttle linkage. nothing in that system would make it accelerate like it is, it would just stay at a certain rpm. it doesn't instantly ram up it gradually climbs in rpm. if it is in the carbs the only thing it could be is the diaphragms i have looked at them but have not replaced them.

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Good Fortune!