I know this may have been mentioned already, but here's my take on it. I have had bad plugs that will foul about half way, then run, but sputter at lower rpms. Also, summer temps and humidity often require stepping down a main jet size, and possibly turning out the air screw. Also, if it has the idle screw in too far, it holds up the slide and loads it up at lower rpms, and adds to the extra "bings" after you let off the throttle. As far as the wet petals, and intake, that is probably how it is, especially while choking. I have noticed, that if my bike does not start right normally, then the choke can flood the engine by just kicking alot. If it doesn't start right away turn off the choke. If you think its flooded twist it wide open, and if its really flooded turn off the gas. Make sure silencer is not collapsing. Its rare, but the packing can clog it up, if the center tube decays. If the floats are having trouble, you will have fuel pouring from the overflow. Be sure that the vent lines are not blocked, so they can work.