Anyone have any idea how to get this out? It's a broken rear derailleur cable that corroded inside the broken barrel adjuster that corroded inside the derailleur. The bike is a 76 Schwinn Traveler. The rear derailleur is a Shimano/Schwinn GT-420.
I've tried soaking it in WD-40 and yanking/drilling/heating. Drilling into it is hindered by the steel cable stuck inside.