I ordered Pagid front discs, front and rear pads and wear sensors from Euro Car Parts recently and today decided to fit them. All went well, I quickly had the front caliper and carrier stripped off, cleaned and ready when I unpacked the new pads to find that they are rectangular and the originals are curved and have two small locating lugs either side I decided to carry on as I was at a friends house not far from the Southampton branch of ECP and could have got a set of the correct pads and sorted out the return of the incorrect ones. When it came to removing the disc retaining screw the next problem arose. I am sure I had the correct bit but the screw was very tight and started to burr so I have left it for now. Would anyone kindly be able to confirm the correct size and type of bit to remove these screws so I may double check? Also any advice as to how to free them off? I will try WD40, heat, impact driver etc and see if that works but if these techniques fail? The only saving grace was that the rear brakes were very straightforward and only took approximately 15 minutes per side so not a completely wasted day.