The fingers in the Leigh D4 are two halves, each tightened separately.
One half can indeed move independently, by design, and this is what is
happening.

He might be talking about the "fingers" of the joint itself, in which
case it could be either a worn or flattened bushing, or a setup
problem - wood not clamped down well enough, the side guides working
themselves loose, etc. Maybe even the pressure that he's using on the
template. IIRC, the instructions say to only route along one side of
the finger template


ahso! Thanks for the info. didn't know that.

shelly