Flight Case: how to protect hanging keys?

I’m gonna be traveling internationally soon and have concerns about the Super 6’s key length (keys extend beyond synth body).

I will likely get this case so that I can also house the pedals with the extra room on the side.

Any recommendations for how to further protect the Super 6 keys? This is the first time I’ve flown with any instrument.

Thomann in Germany has a Flightcase specifically made for the super 6