This is byfar the biggest nightmare of 3dp.
I have one printer thats been sitting here doing nothing since Christmas 2016. I have another sitting here not doing much since feb 2017.
Bed levelling is just a complete nightmare, or just having the bed on springs at all is a nightmare period.
Getting the printhead to not be rammed into the bed or be too high is a complete nightmare. Continuing on this trying to adjust your messed up z axis being too high in the slicer is a nightmare and unreliable.
Not even one good print yet because my first layers are always complete and total shit for one reason or another. Tramming/levelling is almost completely unimportant because I cant even get to where those steps matter theres always bigger problems. Altering where my switch is causes a huge redo in everything else and never ends up where it needs to be its just the biggest fuckup/bad design of the entire 3d printer.
I have designs of non spring loaded bed holders to keep the bed near flush but dont want to print one out yet due to not being able to get a good first layer. Why bother with the trash design if its held in place properly with something like polycarbonate? What makes the springs a good design vs static bed and switch areas?