forget about expensive repairing dash lighting!
https://moman.pl/pl/strona-glowna/27-13065-ford-escort-rs-cosworth-tarcze-licznika-indiglo.html#/
You just need to remove your old covers and use this one from Poland guys!
You will remove your PCB from dash, same remove inverter and install inverter from moman.pl (I prefer to mount inverter out of dash)