Prusa spool holder remixed

I printed the awesome spool holder made by SoundDoc but there were a couple things I wanted better. First, the original will not work on the Prusa i3-mk3 frame and this one will not either. This one, just like the original can be mounted on a shelf. Second, I didn't like the way the rollers came out. Following a comment, I printed the rollers from the spool holder made by MartinMajewski and they worked perfect. After assembling everything I noticed that the rollers could move laterally betw