Ignition switch wont turn - 2006 Yamaha Road Star

Either the key was not pushed in all the way , you have a damaged tumbler, something fell into the key slot, your using the wrong key(what are friends for) or you have a broken contact base.Take the switch off , turn it upside down, and tap it on the work bench to see if any thing comes out. At the same time , take off the contact base and check it for damage.