58D is for a 120HP, not a 140HP. Should have 61Ds in it. How many screws do you have holding the throttle blade onto the shaft? Somebody may have put 120 carbs on it, or a 140 cowling. And 4000 is no where near enough, i turn mine right up to 6100(rev limiter for 85, 86+ is 6700). These loopers need to turn at least 5600 WOT. Are you sure your tach is right?
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR
2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD 
AND THE PINK JEEP!!!! R.I.P.
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