SCS8UU with brass bushings

After many noise hours i decide to change ball bearing linear. I order this http://www.ebay.com/itm/151543525958?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT brass bushings and they fit perfect. For basic I use this conception https://www.thingiverse.com/thing:1196801