IMHO - no, not worth the effort!
I machined up a special adaptor to hold the two PST etalons and got it working...BUT trying to get a repeatable positioning of the etalons/ sweet spot was so sensitive - it was a real PITA!
I gave up....tooooo much effort for little return.
Having said that, there is a guy in Hong Kong who had more patience than me and did get it to work pretty well.
HTH
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