I have a 2006 yamaha vstar 650 classic I took the tops off to clean the injectors put it all back together but I have gas leaking from 1 of the 4 screws how can I stop it from leaking

Your idling jets works well, but your throttling jet may have blocked in it. open the carburator and clean it.

it sounds to me like clogged jets in the carb u need to take them off and clean the jets with a peice of small wire pull a peice off a wire wheel it works best for the polit jets (small ones ) get a digital camera and take pictures as u go if you are not sure that way u can refer to them if you get lost good luck

check your coils and wires to them had same proplem and found 1 of the grey wires to the coil was disconnected