Ive heard folks say that bogging between 1/2 and 3/4 throttle can mean Rich or Lean. Help me understand what I have going on. Bike Summary: 02 WR426 Stock pipe with Pro Moto baffle YZ Timed & 03' 450 Cam Stock Jetting AP squirt: 1sec Float: 8mm Temps: 65-80F Elevation: 800' Air box lid removed Air Screw: 2 turns Performance Summary: Starts and idles good. Good/smooth throttle response when cracking open from a stop. Once I get past 1/2 throttle engine bogs down until I throttle back. So far Ive tried a 170main and the stock 165 main. Needle clip is on #4 (middle). Im off to try the #5 clip position in an attempt to lean it but wanted to confer with the experienced on this before banging my head further.