Masking tape can be used to shim the bushings
to reduce the amount of lateral play. (You’ll
probably use beige tape, but we use blue so that
you can see it more easily.
As mentioned in Step 5, the bushings are removable.
Essentially, they can be pushed out from the back side,
just by pushing on the correct side of the split section.
Apply tape-- wrap around most
of the way, not covering the slit.
You can do more than one layer.
Cut tape.
Re-insert bushings.
Only you
will know its secret.
Appendix B: Improving plunger precision, part 2