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For turning the ball joint you can use a
3mm Ø hex wrench. But the first turnes
should be made from hand.
Another way is to screw the ball links on
with a accu screw driver. This is depen-
dedn from type and works not always.
Important is less play in the grips but also
no tightening, so that the ball joint can be
turned without risk of slipping.
Rough length of the double ball joint R/L
linkage.
Attach the double ball joint linkage with a
lense screw M3x12 989 and enough
Loctite on the long blade grip arm.