Lane A Fault - Ignition/Injection Driver

One thing we noticed on the BUDS Health Tab was that all 4 injector Dwell times on Lane A were 0.0.  Any idea on what that means?

Rotax-Owner wrote:

If you upload your ECU data, we can have a look and give you a diagnosis

I was a few days late getting the data uploaded, but was able to get.  Are you able to access the BUDS file?  A link is posted in a previous post.   Thanks for your help.  

Checked all the injectors, double-checked all of the connections, and tested all of the wires.  Still no resolution.  We're thinking it may be the ECU.  Does anyone have one we could borrow for testing?

Got a "loaner" ECU on the way from Lockwood.  We'll be swapping it out this weekend to determine if it is the ECU throwing a steady Lane A.  Any tips on the removal/installation of an ECU?

Swapped out the ECUs and determined that it is NOT the ECU.  We're out of options.  Does anyone have another suggestion?  Help!