Rob,
Somethings obviously NQR on this....
I would suggest starting at one end and working your way through just to check what is causing this...
What fuse values do you have in F101 and F102?
I am assuming you got the correct flipper kits with normally closed EOS switches?
Correct fuses sb and did use correct kits I believe. The eos has the spring leaf to Make it normally closed.
As far as cheap eos I'm sure I got them from bumper so would have expected them to be good. But I'll try another supplier for the next batch as my spare parts dept is out of stock