zozee,
Frazzled .... I haven't heard that phrase since my mom passed.
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OK, here is three angles of how it looks assembled. I know the screw on the left holds the assembly on the needle bar and the thumb screw just tightens the clamp part that holds the needle.
If you can't get it with these pics I might be convinced to take mine apart for a better description.
Just remember, it ain't brain science or rocket surgery ... it's simple.
Joe