@Gbirk's mount design fitted perfectly on one of my two Skywatcher Wedges, for the second one it was just a little bit to big.
Remixed it by removing about 1.5mm from the dovetail-part of the model, works fine now
The author remixed this model.
Made the Vixen dovetailmount part 1,5% smaller compared to the original using MS 3D-Builder