1 1/4” and 1 ½” star nuts are out there so should be able to get something to fit.
https://www.sjscycles.co.uk/lighting-spares/schmidt-headlight-bracket-for-suspension-forks-for-bm-lights/
Just need a different star nut, watch for the fork bottoming out and ripping the light off too!
@M_V started
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1 1/4” and 1 ½” star nuts are out there so should be able to get something to fit.