Summary Had problems finding a Z axis mount that fits the Longer3D LK4, Im sure there is one out there but cant seem to find it, so I just did a quick redesign. I took this design and just edited it to fit the LK4. https://www.thingiverse.com/thing:3973704. Fits fine, just waiting on z rod to actually test it. Should be plug in play when adding the extra Z mount to the LK4 (no editing in firmware) from what I am told.