thanks for the push vireland , the shapeways listing has been updated and I thought I showed it on one of the threads but didn't, my apologies
photo 1 - shows the difference from the side between the stern bracket and the new angled Swinks bracket on the left
photo 2 - shows the difference from above between the stern bracket and the new angled Swinks bracket on the right - the slot is moved 2mm closer to the corner which effectively raises the target
photo 3 - shows the 2 brackets to be swapped out in which the light board has to be loosened to remove one for swapping
photo 4 - shows the Stern bracket before swapping the base bracket
photo 5 - remove the bolts while keeping the parts of the target together and then assemble the new Swinks bracket like the original
photo 6 - this shows the ball next to the target rivet with Stern's base bracket
photo 7 - this shows the ball next to the target rivet with the new Swinks bracket
photo 8 - this shows the comparison between the 2 targets with the height difference - left is original and sitting lower and right higher due to the drop of 2mm in the slot on the swinks bracket.
Once finished both targets they will both sit higher.
Note: the brackets now on sale do not have the web in the corner as this was un-necessary in a casting so photos 1 & 2 are of v1, v2 are the ones now available.
I hope that helps