can anyone help me? as soon as i start my bike it revs flat out, and then dies when i take off the choke. bike is an 87' kdx 200. bike ran out of petrol last time i was out, and was lying up for about 5 weeks. i already drained the tank and cleaned it, new air filter, new plug, took apart carb and cleaned it (about 7 times). i found a piece of crap in the jet and thought this was the problem but its still the same. i noticed a small piece broken out of the corner of one of the reed valves ( really just like a pin hole). could this cause it? when i start it up it feels like when it is low on petrol like reving up like mad and then half dying. anyone got any ideas?