Ok, I have a solution for my issue. While troubleshooting, I disconnected the Honeycomb throttles and started MSFS. No problem starting the left engine of the 787. Ok, so there is something about the throttles that is the issue. I have the Boeing 737 throttle quadrant setup on this, which leaves two axis not used. They are pushed down to 0, at the bottom of the controls and out of the way. Apparently the 787 was looking at these non used axis and used one to control the fuel flow for the left engine, even though I never mapped this. No other aircraft I have has looked at these axises. So going into the Control setup I unmapped the axis from fuel control and was able to get the left engine to run correctly.
Dwight