Prepared patch of 0.025" material to cover previously punched instrument hole. Aligned 1/8" front panel and patch, drilled pilot hole. Drilled and deburred hole for 1/8" rivets for attaching patch to rear panel. Removed front panel, updrilled pilot to 5/8" with step drill. Used panel punch to put hole in front and back panels. Drilled additional rivet holes, placed to not interfere with location of switch holes. Scraped and filed hole interior on rear panel to fit radio remote.