That reminds me! Mine had the wrong needle and seat for gravity flow carbs. You might pull out the seat and see if they are 1.8mm (pump) or 3.5mm (gravity). It's right on the underside after you pull them out.
Talk to BigBucks on here, H.O.D. Chassis, I saw pics of one he did on his facebook page. I'm sure he will point you in the correct direction.
https://www.facebook.com/HodCustomChassisAndFabrication?fref=ts