Is there a special tool for removing and installing the rear brake cylinders? I have fiddle faddled over the years with this and today I took off the rear cylinder for my 69 TR6. Getting those shims out is not the easiest task. Maybe it's my procedure? The benefits of being inside as this car has been sitting since 1982 and much to my surprise is the the lines and everything thing came out even the piston. Going to order new ones and needed to see what size pistons were in them. Turns out they are 5/8".