Making the Cortino

WestFw was in diapers when I was designing PCBS

Heh. Not very likely :frowning:
However, while I have designed some PCBs, I make no claims to being an actual PCB designer, especially when it comes to high-speed boards. Alas, I'm not alone. There are far too many "products" where someone plunked down a circuit, got some autorouter to connect all the signals, shipped the design off for near-automatic fabrication, and assumed it would just work... Sometimes it does! There are things I do with my board designs that I INTEND to help with high-speed behavior, and they seem to be more than other people do, but I don't have the "modify the design and actually measure the results" experience that it would take to actually have much confidence. (like, there seem to be competing opinions about "ground planes" vs "single point GND returns"... Sigh.)