Best way to remove cassette keys?

[Stretch]

I'm trying to remove my cassette keys but they seem quite stuck on. What is the best way to remove them?
eric

 

[baddboybill]

They may have glue on them Never tried on M70

 

[Superduper]

Don't.

 

[skippy1969]

Don't.

 

[devol-toni]

Send me that M70, I will remove that keys for you.