This is been driving me nuts so hopefully someone can help me. Have a 91 CBR600F2 with a set of 33FCR's. Started out at sudco's settings of 122mains, 50slows and 1 turn out on the fuel screw. It is horribly rich, like cant stay in the garage it smells so rich bad. Went to 118's and 48's and its better, idles and revs, but still horribly rich, but idle hangs up like its still lean. Rev it and it will go up, then hang around 3500, then drop to idle around 1800. Opening the fuel screw doesnt really change much in the running and the richness gets worse. Taking a temp gun to the pipes shows 1&2 are at 400 degrees and 3&4 are at 160 and 200. No clue as to this as 1&4 run off same coil and 2&3 do, so doesnt appear to be ignition related. Valves were checked and all in spec. Compression was good and the same across all 4. Ive run fcr's on an sv so am familiar with them, but this is killing me. Any suggestions would be greatly appreciated.