prusa i3 Top End Z Axis

We all know Prusa Chinese vanients are cheap and in accurate but it makes it affordable to us. How ever I think we can improve its ability. In my case the Threaded Rod and Z-Axis Top had a space of 5 mm. So I had desided to install 608zz bearing and adjust the gap. Note that this may not address wobbling but it can improve x axis vibration due to this weak point.
Any way Enjoy