Someone suggested to me that Munsen rings might be a good way to fix my PST to a dovetail. As they looked far more straightforward than having to turn some fittings from solid aluminium I thought I’d give them a try. I managed to find a pair of 54mm brass rings on ebay which though slightly too large in diameter were perfect once I’d lined them with sticky-backed felt. Here’s the end result on the dovetail:
