So, finally installed my Nordskog (analog) A/F mixture gauge. Setup was fairly easy, heated O2 sensor threaded into the exhaust pipe where the four header pipes come together. Problem is it's always pegged out 'RICH'. I suppose it backs off from pegged rich a wee bit if I'm performing a very fast decelleration down a steep hill, but other than that....at idle through WOT, it's pegged. Was wondering what other's gauges are like? The engine does however, run rich, but I didn't think that it would be 'off the scale' rich. Maybe that's where it's suppose to be gauge-wise? In any event, is re-jetting with smaller jets the only way to lean the motor out running? Should I lean it out at idle according to the new A/F gauge, then re-jet pending the results? Truck setup is: 454 w/75K miles. Edelbrock Performer intake. Holley 4150 series 750 double pumper. Headers. TH350. Is this too much carb for this setup? I have been back and forth between this carb and a Holley 600 single pump, but the 600 just doesn't give the desired uuuummmpppphh that the 750 does. Huge difference in acceleration 'feel'. Thanks!