[steve meltzer]

I realized (while working on the 4160 from my '67 'Vette) that while you can raise the float level, and thus the fuel level, on the 4160 by turning the needle/seat CCW, the opposite isn't true...before you can drop the float, you must rock the car to empty the bowl with the sight plug out or else the float won't drop because there's too much fuel in the bowl. Then you can turn the N/S CW and thus decrease the fuel level. Duh! steve