I just replaced the toolhead with the 1.75mm one. After I was done I noticed that the left side of the X rail was lower than the right. I must have pushed down on it when I was working on it or something like that. I figured it would even itself out, so I turned the printer on. I head a bit of grinding when it hits top (or bottom, I don’t remember now), but since then the left side remains lower than the right. Even when I push it with my hands to be level, it goes back to the uneven state.
Also, when the printer starts to print, it wipes the extruder against the bed itself, not the felt pad, as if the bed (the Y position) was off.
What should I do next? How to fix this?