Which grid is more suitable for adjusting the carburetor oil needle of Haojiang Cheetah 125-2A?

Under normal circumstances, the oil needle of carburetor throttle is generally set in the third grid, that is, the middle grid. If there is a sense of frustration at a certain speed during driving, you can lower the circlip of the oil needle by one grid, so that the oil needle can be raised by one grid, which should be enough. If it is raised by two squares, the mixture will be too rich and the combustion will be incomplete.