Key Sticking In Ignition

[nightrain]

My key gets stuck when I turn off the car,it comes out after pulling and moving it around.The funny thing is my spare key won't go in all the way,and they both seem exactly alike to me.It is a 1993 LS 400 with 170000 miles and runs great???

[RFeldes]

Graphite or silicone spray.

[new2mud]

Also fiddle with the gear lever selector--if it's not registered in "Park" just so, it will prevent proper key removal.