[Poppy]

Here's a thread on how to test COPS
http://www.fordforumsonline.com/forum/engine-drivetrain/97-check-ignition-coil-plug-type-coil.html

 

[Poppy]

Here are some tips for checking for vacuum leaks

http://www.fordforumsonline.com/forum/engine-drivetrain/94-locate-vacuum-leak.html

 

[Poppy]

You mentioned that you regapped your plugs.

I think either Cuda_Jim, or Canuck623 mentioned just the other day that one should NOT regap platinum plugs, that could cause issues with the plugs, they should be pre-gapped, and if wrong brought back to the store for a replacement.

Do you have platinum plugs in there?

 

[Poppy]

See if this helps you with your vacuum guage readings

How to Use and Interpret a Vacuum Gauge

 

[Poppy]

I didn't realize your vacuum was so low.
Did you try clamping off the brake booster?

Hmmm read this
http://www.fordforumsonline.com/forum/engine-drivetrain/94-locate-vacuum-leak.html