It appears you may have forgot the 2nd extruder.
*************************** X, Y, Z, E0 [, E1[, E2[, E3[, E4]]]]
#define DEFAULT_AXIS_STEPS_PER_UNIT { 133.33, 133.33, 1600, 93, 93 }
#define DEFAULT_MAX_FEEDRATE { 300, 300, 5, 25, 25 }
#define DEFAULT_MAX_ACCELERATION { 3000, 3000, 100, 10000, 10000 }