Ive had to hack the heck out of the Der Emma Laden gun mount. It was not made for the static display version of the leopard kit, which has rollers in the bottom because Tamiya was going to make it full option eventually. Those roller mounts are in the way of his large ring which was really made to fit around the leopard 2 ring that most people seem to convert their leopard 1 tanks over to. I didnt buy that conversion kit so nothing lined up well. I just cut it all apart and hacked it to make it fit. I think next time I will go back to using the common 3d printed recoil unit and make my own trunion unit. His is really big and hangs down far.
It took quite of bit of tinkering and fitting to get the elevation servo in the right spot to get the full range of motion out of the mount. I havent glued the brackets or spacers for the servo in place yet but I have it all mocked up and verified my elevation and depression angles.