Hi Alan ,
re removing the grub screw - my car failed its MOT on headlight alignment , and to lower them I needed to loosen this grub screw. Mine was rusted solid, so in the end I had to use a screw extractor , drill and tap to next size up , and to use stainless bolts with a head you can get hold of instead !
Its now on my winter check list to remove and grease these screws.
Good luck
Graham
