I upgraded my ender 3v2’s hot end to a Microswiss directr drive extruder and hot end. Now, the only thing it will successfully print is the benchy and lucky cat test prints.
Everything else, the print head auto homes and then rushes to the back of the bed and tries to print the model in 2d - or the print head moves up the z-axis (it think it’s called) trying to escape through the roof of the house. I have tried using different slicers, the print bed is level. I’m not sure what else to do.