I change the Heidenaus myself, just try to lay them in the sun for a few hours first to soften the rubber.
I leave the rotors on when I change my tires, just put a towel under it.
Mix a little Dawn dish soap with some water and spray liberally, it will make the job easier, removing and installing.
2009 F650GS (Wife's)
1987 Husqvarna WR 430