Scrapper of metal
If you redrill is there room for a longer bolt and have the lock nut on the outside of the tab using the end of the bolt to tension the v-wheel. This would mean one bolt and one nut, saves on hardware.
It would be close to be sure. It’s currently drill and tapped for 1/4-20. If I can move it over an 1/8” I think the end of a 1/4” cap screw will bear on the nut.