my psp keeps going in 1 direction!!!!

hi all! my psp keeps going in 1 direction. it the nub the that is doing it. does anyone have any idea hoe to fix it? thanks!

 

try tightening the srew bellow the analog stick. if that still doesn't work undo the whole cover and tightening the analog screws. just losen or tighten the screws untill it sets its self

 

thanks ill give it a try. want if that doesnt work tho?