Can't pull out lever mira shower after removing grub screw

[dwaynnor]

I would like to replace the lever of Mira shower so I removed the grub screw but cannot pull the current lever. It is stuck, if I pull too much the whole unit may fall. I sprayed some lubricant without success. Any ideas? Thanks.

 

[WC1]

Some taps with a plastic screwdriver handle.
Once the grubscrew is out it should come off.

 

[oz-plumber]

Pour some hot water over the handle, wait until handle is warm /hot and then try to remove it.