Wow Frank, so many issues with these legacy blocks!  I am surprised and disappointed that the quality control was so poor with changed components, missing components, and incorrect labeling.  Are the three or four I gave you all mismarked and/or incomplete?

    The amplifier block was continued by LectronRWO, I wonder what their version of the block is like.  I should have one in my storage area.

    Thank you for your research and updates!  I wonder who many other multi component blocks have issues 😥