Thanks for all that useful info.
I have NEMA 17 steppers and adjusted the voltage on the A4988 for 0.62 volts and have tried different settings. For all the adjustments I have made I have got no where near the torque that the L298 gives.
Is there a sketch that will allow me to test the individual A4988s on a breadboard?
I do appreciate all the help I am getting.