u/SealKing1905

This forst started happening after toolhead 3 and 4 independently had clogging issues, bought 4 identical replacement hotends, i had to replace toolhead 4s hotend twice because of the same problem, the hotends somehow start hitting the bed and the prints after a few uses. Toolhead 3 has a hotend from the same purchase but hasn't had any issues. (I have calibrated the toolheads and all but this happens again with toolhead 4) Is there something obvious I'm missing?