new Z wobble design

https://www.thingiverse.com/thing:1858459 credit to him

i just mod it so more Z real estate can be used.

in my case actually, with the original, my nozzle cant reach the bed due to my new X carriage (i3 Prusa carriage for my A8). will all bed corner lifted, I still need 3mm distance deeper for my nozzle to hit the bed, thus this mod is created. The result says it all. (in conjunction with brass bearing )