During early road testing the trike pulled to the left under moderate to heavy acceleration.   After a good deal of troubleshooting, lasting many many days,  it was determined that the Kelly controllers on the trike were programmed at the factory for “speed” mode which did not allow for evenly balanced acceleration when dual hub motors are mounted parallel to one another.   The technical service folks at Kelly were very helpful and provided me the necessary software and firmware so I could “re-flash” the controllers to operate in “pure current mode” rather than speed mode.   This allowed the two controllers to operate in tandem and balance out the torque to each rear wheel during acceleration.   After ironing out a few other minor electrical issue the trike is now up and running.    These are photos of the finished project.