Thanks, that looks helpful.
I see these comments though,
i think boards should work find plugging x1 extender into x1 motherboard slots without shorting pins.
Mine does not. I will try the fix anyway, thanks!
edit - It worked, thanks. A video card is now detectable via my extenders on both x16 slots and x1 slots. I only did one extender so far so I only had a chance to test one. Now I have a few more to do... I see on that other thread that simply grounding pin B17 may work. ?? It is suggested to short it with neighboring B18 but I would rather connect it to my extender's molex's ground so I dont have to tap into more ribbon wires than I have to. What do you think?