Nancy,
You asked about the knob on the right of the ZZ knob. On yours that knob does lock in the width. It doesn't more the knob, only locks it. Try moving and holding the ZZ lever in position with the left hand and locking it with the right hand. On mine the right knob picks the pattern, as the cams have four patterns on each cam.
Those cams sure look familiar. I'll check.
Cathy
Originally Posted by
BoJangles
Oh Cathy, this is the cam. Do you have them?