clio200pat

Hello everyone, new to this forum and needing some help! Resurrecting this thread as I'm trying to change my rear discs and pads on my Yeti 4x4. I can get the rear pads out, however I'm a bit stuck as there is no way that I can seem to undo the M14 12 spline bolts. I've tried a longer bar but I just cannot get the leverage I need to undo them. Other than admitting defeat and taking it to the garage, has anyone else who's done this job got any advice?? It is a 140 2014 4x4 if that helps at all. Many thanks