I’m thinking of chiseling rivets off, drilling new holes in pad plate, and potentially new holes in arm and using bolts/nuts/lock washers/blue Loctite to reinstall.
1957 Chevy 3200 Daily Driver PS, A/C, Tilt column, Rebuilt 350, Rebuilt TH350, Reupholstered Bench Seat, sound proof/insulated, LED headlights/taillights/backup lights/interior courtesy lights. Follow in the DITY