All good! I finally worked out how to scale the IS diagram from Magura, printed it, clamped it betwixt locknut and dropout and traced the FS mounts onto it. Not perfectly accurate, probably within 0.5-1mm given the distortion of the lines at the res it's at, but well within bounds to work out the rotation of the mount since we know the bolt spacings. A mate is converting it into a mount adaptor as we speak, and hopefully we'll end up with something that can cop a quick tumble, tap and black anodise to look factory.
