Hi, I just found a video on youtube showing greasegun method today.
I'm having some problems to remove bleeding screw. they are really stuck. I'm using plenty of wd-40.. I will also heat it before try to remove.. after that, I will try to use pressured air to remove pistons.. If not sucessfull.. I will try to use grease gun.. if not sucessfully........don't know yet =P~
Use grasegun to put pressure inside caliber from opened brake fluid bleeding screw. Need assistant to hold graseguns hose. Vaselin push one of pistons out. After that sink caliber to diesel for some days. "old style" workshop methods.