THE BLEED SCREWS
The bleed screws can sit quite firmly, and it is easy to miss and damage them if you use a wrench or similar.
Use instead a wise-grip pliers that you mount in an upright position. Tighten the pliers as much as you can,
take a good hold with both hands, and twist gently. (If you try to mount the pliers sideways
you will get so much force on it that you could break the
bleed screw.)
