Help. I beseech you. Someone. Anyone. My 1980 300D has the dreaded ignition-key-won't-turn syndrome. Steering wheel can be rocked back and forth, key only turns but a bit. Been told I should have fixed this before, have had no problems with key until now. AAA won't send anyone out to pick the lock - say it is a dealer only situation. Local dealership has spotty record of repair regarding our classic W123's. Local mechanic quotes $650-750 to get tumber out. Local 'Mercedes Key Expert' via telephone - without examining car - tells me it's not the tumbler, it's the steering wheel lock. What's up with that? Tried jiggling key for some time, hear clacking/clicking sounds from cylinder/tumbler, no turning. Will inserting large screwdriver into slot and turning to position 1 enable removal of cylinder/tumber destroy cylinder/tumbler but allow for replacement, or ruin entire assembly? Will drilling cylinder/tumber produce results to replace cylinder/tumbler without ruining housing? Would like to avoid removing instruments, dropping steering wheel, etc. Wheels of car straight ahead, no pressure on steering, car on level ground in friend's underground condo, need to get out of space.