The rest of the knobs fit perfectly but there are no fitting instructions. Have a little background and a little Google-Fu will get you there pretty quickly. I have the jdm-055 model and installed them and only the sticks feel tight and move at times. This is a brand new controller that is ready to use right out of the box. I just wanted something to make him "mine" and these sticks may not fit. Maybe I just have a bad batch, but they just don't quite fit. I might post pictures soon.