Prusa I3 MK2 Lowes lightbar bracket for roller type spool holders

i made a modified version of my other light bar mount (http://www.thingiverse.com/thing:2040511) for the utilitech 12in light bar that allows you to use low profile roller type spool holders. i like these type of holders better because they are quieter and smoother. here's the link to the one that i use. (http://www.thingiverse.com/thing:1967113)
i added this file to the original one as well. let me know if there is a fitment issue i printed an earlier version of this that fit too loose but i f