did you just try the 3 wire trick on one of the 4 banks, or did you try it on each individual bank?
bank 1: twist together ground, A18 and A19
Bank 2:twist together ground and A18, than twist 3.3 and A19 together
Bank 3:twist together 3.3 and A18, athan twist together ground and A19
Bank 4:twist together 3.3, A18, and A19
I dont know who originally made this picture but it works great. All I added to the photo is where it breaks down what banks are what.