Hi Tony
Only a suggestion - but do you have a local machine shop that could make you an adapter ring/tube ?
Have one end machined for the Wray and the other for the 39mm thread.
Another solution is to have a locking flange machined - push the lens through the 39mm plate and then screw on the locking wring for the Wray.
Some large enlarger lenses (LF/ULF) have used locking flanges as their mounting method.
Best of luck
Martin
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