I am already one of the hundreds that had the ignition switch lock up and not turn. I had to have a locksmith come to the house and fix it 2 years ago. He removed the tumblers that were hanging up and now there are only four and the key turns fine. I am not sure my problem is understood.
The cylinder assy is spring loaded inside the housing and does not always pop back out..On my model, you remove the key and you can push in the cylinder about 1/8 inch and it pops back when you let go.
It does not always pop back out. It is not a problem with turning the key to start the car.