Hi Tone (Tony?) the spigot you show is the overflow, put a pipe on it and run the open end down between the back of the engine and the swing arm pivot. Two things 1, sounds like your float needle valve is passing fuel as your carb is overflowing, the float height adjustment should be done with the little spring loaded pin uncompressed, if you did it this way then remove and inspect for a worn ring around the pointed tip of the valve.
2. do not run the bike without a filter as it will no doubt run very lean unless you jet to compensate, this will overheat the engine and may hole pistons or seize whilst being ridden, a start and the odd rev up not ridden will be ok until you fit the filter.
...Paul