Tony,
That is a really good idea! I will give that a try. Would you be willing to share the KiCad model? I'm not terribly versed in KiCad but can sort a 15-pin extender from the 22-pin model, even if starting afresh. Also, I have a hp 3721A Correlator that needs a 22-pin extender to debug a logic board.
Christopher
Christopher Tucker