Mitsubishi Repair: no spark from one coil on a 1995 Stealth, dodge stealth, lab scope

Question
1995 Dodge Stealth R/T 3.0 DOHC non Turbo.
what could cause only one of the ignition coils to not spark.  Coil is new, Transister Block is new, computer has been replaced (with 3 different ones) Cam and Crank signals are good. Wiring is good.  Has battery voltage to coil.  No signal coming out of the computer goingthe transister connector. cam and crank signals were checked with a lab scope and wave form is text book.  I have picked the brain of everyone that I know in the business and they all tell me that if there is no signal to only one coil and the others are getting a signal that it has to be a computer problem.  I am at dead end.  I have been working on this problem off and on for over a week and cannot seem to pin it down


Answer
Howard,
Though you've heard it numerous times, unfortuntely, I would suggest a faulty computer as well.  In your research, you've probably read that between 1989-1994, MItusbishi used under-rated capacitors in their computers.  All those computers over time would cause problems due to corrosive liquid from leaking capacitors.  You can read this article if you want some additional information:
http://www.90gsx.com/eclipse/cap/caps.htm

There's a chance the ECUs you've been replacing have had problems similar to this.  But it would be very odd if all 3 of the ones you mentioned had the exact same problems.  Bent pins, occasional shorts, and even a bad belt tensioner can cause coils not to fire.  Sorry I couldn't give more help, but hopefully you'll find out the true cause.  If you do, I'd be happy to hear the cause!  I can spread the news to other frustrated owners who may have the same problem.
Good luck!