I thought I had this beat but it just keeps coming back. My carbs are set at 15.5mm floats and 2.5 turns out. I have the kleen mod/airbox/float mods. I tried blowing through the fuel line and that was ok as well. I had it running a couple of times and idiling good. I changed the oil and bam, it started flooding again. The bowls are clean, I just put in a new fuel pump and lines/filter, I have a new battery that's kept on a trickle charger. I am wondering if I am getting a weak spark or something. Any ideas?