I am still "at it ".
Yesterday while building a new preamp tagstrip, I couldnt work out why there was no earth point on the tagstrip, when I KNEW I had laid out the wiring underneath exactly as the picture showed. EXCEPT!!! I didnt. I counted lugs from the left on the lefthand side of the picture, and right on the righthand side of the picture. It took me TWO hours to work out the picture has 20 lugs and my tagstrip has 19.
Joe