Cards will work in pci-e x1 without problem, use pci-e raisers like this:

Also, you may need to shortcut 2 pins in pce-e x1 to make it work:

I did see that other people were getting way more m/hash than me but i couldn't message them/reply to the thread because of my newb status :/
Try to write "-v -w 128" to extra flags field