There are twists and turns and little nooks and cranny's in mine that just don't seem to be bleed-able short of pulling the complete line out, hanging the entire set-up high enough it doesn't touch the ground, and constantly filling the reservoir while wriggling all the parts and hoses around to allow all the air to escape. Then close it up and install it as one complete unit from the reservoir to the slave attachment, then simply gravity bleeding the slave cylinder.
I'm not sure if yours is the same. Look in the instructions that came with your MC very closely, somewhere in there should be a note to Ford applications about calling their 800 number for information on bleeding the system. If not, maybe they've corrected it, but if you're having problems I'd think it hasn't been addressed, and you should get their info specifically to those models.
They knew about it in 2006 the first time I did mine, but I found out very late in the game. I had begun with parts store parts, and maybe a bit from Ford. Early in my ordeal a Ford parts clerk had run into numbers that he couldn't understand. Later in that project I was again at Ford dealership and being helped by their parts manager. He understood what was going on, but I was too far along at that late date to change courses.
They had a newer system even for my vehicle that addressed the difficult bleeding problems, but it required using only the newer systems parts thru the entire process, they were not interchangeable.
I did mine again maybe 6 months ago, and all the parts I got readily worked on my system, so I suppose if I'd had the newer system, all Ford parts would have been my only option.