Viper 150CC w/New Mikuni 30MM leaking gas

[InfiniteBPS]

Hi I am new to the ChinaRiders forum. I recently bought a used 2020 Viper 150CC that had barely been used by previous owner. Previous owner didn’t drain fuel from OEM carb before storing. Then they could get it to run so they removed carb and threw away then never found a replacement carb that fit. I bought the dirt bike did some searching on internet which brought me to ChinaRiders where a I read folks recommending upgrade from OEM 27MM carb to a Mikuni 30MM carb. I got the Mikuni 30MM installed and finally got dirt bike running and went for short ride to make sure it shifted thru all gears and it pulled pretty good. The issue I am having is when I come to stop engine bogs and does. I notice fuel was leaking from bowl drain screw so I tightened it which stopped that leak. Now with the engine not running if I turn fuel on I have steady flow of gas from overflow needle. The carb is at a slight angle off from being level so I thought maybe the angle was messing with floats causing the overflow of fuel. I put a 2x4 under front wheel to level out the carb but now the fuel is pouring out of the air intake side of carb. Should return carb for a new one?
Does anyone know if there is an adjustment I need to make?

Many Thanks in advance for any advice