Recently, my '92 164L ignition key began being stubborn to turn. Just occasionally at first, but has become more frequent of late and taking longer to 'free'. This morning it took several minutes before it would turn. Tried spare key too. No difference. Am I going to have to change out the expensive ignition switch assembly ? ???? What's going on? Help!..............Realized that I don't think steering wheel had 'locked'. Seems like I was able to turn it quite a bit while fiddling with key.