Originally Posted by AndyIoW
The screw is still in the clamp part as it seems to be stuck in there. Do not know the thread size so the appropriate grub screw can be used?
IIRC the screw that connects the brake to the clamp is itself locked by an M4 grubscrew located on the rhs of the clamp. Release this and the screw comes out as it isn't threaded into the clamp.