Could be the key is not cut quite right ?
Have you tried both keys ?
Try not pushing the key all the way in or pushing in real hard to see if you get any difference in the action.
You could get another key cut then have a play by adjusting the stop points to see if it helps.
Some of the 19 rides in my shed
2014 V2, Snoopy
2009 Wee, Pumbaa the pig
WR450F, The Blue Postie Bike
YZ250N smoker with rego, Stinky.
Yamaha MT09 (FZ09), The Scud missile.
Club Lead not Club Med.
He with the most toys wins.
Out of my depth in a puddle.
Live life on the edge you will see more that way.
Ridding a motorcycle keeps things in balance.
At the end of each trail and at the end of each day history is made.