Brake discs

[Minid]

Hi, wanted to clean up my brake discs on the blaster. Took of the calliper and the central nut. Still no joy when giving it a tap. Anything I am missing. Or are they just rusted on. There is a little black grommet on the disc, anything in there need actioning? If I use more force I might warp them and buying a new set, thanks

[ZMANALEX]

Remove the grommet and let off the handbrake shoe adjuster.

 

Or/Also, remove the ashtray and let off the cable.

[Minid]

Thanks