Float Setting
Actually, the critical measurement is 41 mm, which dictates what height the fuel will be in the float bowl when the float needle valve shuts, and hence affects all issues relating to mixture. The "drop" distance is only to keep the float from binding when the bowl is empty, which only happens after sitting for a prolonged time. But if your carb was "pouring out gas" you have more than a mal-adjusted float. Perhaps it was stuck? Or perhaps the needle valve has a bit of dirt in the seat? Does yours have a "soft" needle tip (which is better than the solid brass tip) ? Or perhaps your fuel pressure is too high? Do you have an aftermarket electric fuel pump or the stock mechanical? If you have an electric pump, do you have a pressure regulator? If so, make sure it is adjusted to supply no more than 3.1 to 3.7 psi.
Otherwise, clean out the neele and seat, adjust the float, and try it again.
HTH