Thanks for the feedback scott! Very helpful.
Yes, I agree that some things that are "obvious" for a seasoned builder may not be clear for a first time builder, and I have not explained it in detail... also this PDF was rushed compared to the SC-1 documentation.
I'll update the PDF instructions with the issues/points you've raised and make it clearer, add more photos. Good suggestions, BTW!
I figure it will be easier saying the long leg of the LED or the short leg of the LED rather than saying positive or negative. The silkscreen marking shows one side as flat but it's not very clear.
Yes, the top of the PCB is the regulator side.
>The trim pots and the regulators are not clearly marked for orientation. I'm not sure whether it matters, but I made sure to match the picture for those.
There is an outline on the board for the proper orientation of the trimmers. But even if it was inserted backwards, the circuit will still work. Though CW and CCW in the directions for adjusting the output voltages will have to be reversed.