Any trick to getting all the air out of the rear brake caliper on a R100S? Pedal is still a little soft. Rebuilt the cylinder - pads are good. I took the whole unit apart and it seems to me that the way its constructed, even using a pump - ( which I did ) - will not get all the air out. Maybe removing it from the rear wheel and turning it upside down while bleeding? Maybe pumping fluid up from the caliper into the master cylinder? Any thoughts would be appreciated. Not a good feeling riding with a soft rear brake !!!!