Holley instructions contradicting on fuel bowl level ??

I'm needing to adjust my fuel bowl level on my XP Ultra #80802 On their website instructional download they said when looking through the clear sight glass the fuel should be midway up the glass when properly adjusted, everywhere else i'm reading and even on Holley's youtube instructional they said it should barely trickle out the sight hole or barley below sight glass,when engine is rocked side to side... What is right ? Additionally when I tried to adjust the fuel level screw I found that there was nothing to grab and turn it was flush to the bowl base... The front bowl is sticking up above with enough to turn with the nut.. What could cause this ?

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