Sticking ignition lock 85 Mercedes 300D
My ignition lock , which normally worked fine,sticks and it drives me crazy. I jiggle it and whatever and it alwys seems to turn after 45 tries.I sprayed WD 40 down the keyhole and its round case. It still sticks at unpredictable times. The next time it flat out doesnt turn, naturally, I will be 300 miles from home.
Does anyone have any ideas?