The key won't go in all the way -- about 3/4. Tried everything....Moved car, moved wheel, put in drive/park/neutral....

The slot seems very loose...

What do you guys think? Is the tumbler done for? Maybe its just loose?

What is involved to get to it?

Thanks

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k