/diy/ - Do It Yourself

>>1335084
>It's like 2 rollers make a contact with the rail and the 3rd one is free and the whole arm wobbles freely if I touch it.
>How do I deal with that?

With v-slots like that there's usually an excentric spacer which you can turn to preload the v-wheel against the extrusion, if the Ender 2 is any good there should be one which you can turn with a 10mm wrench

It looks like pic related

If there's no such thing then you're fucked buddy