Me too, Richard!!
Unfortunately, I didn't manage to get the crank pulley off so my Mini is still on axel stands on the drive.
Supercharger pulley is off now and new one fitted, I used the Alta pulley clamp and made my own pulley puller from a flat piece of steel and a large nut and bolt, it's very effective, I didn't damage the original pulley at all.
Now i'm just a little stuck with the crank pulley. I have a large crows foot pulley puller which I think will work, however, the M6 bolts I am using with the puller are too weak and the heads keep snapping off
( To be honest, this is driving me nuts, but I know I will feel good when it's all finished.
Philly c, did you use a 3 legged puller on the crank pulley? I have that type of puller but I don't know if I want to risk damaging the crank.