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Convert Mark VI Side Key Ball Joints to Forks

The ball joints for the Side Bb and Side C are endlessly problematic for owners of some Selmer MKVI's. The idea of having a tight fitting steel part inside a soft brass key is not a good one. By removing the ball joints and adding forked arms on both levers, a solid, quiet, and friction-free connection is made.

Here, the original ball joints have been removed and replaced with forked arms. 

ball to fork side keys

Shown below are modified forked arms on the instrument.

mark vi forks