He didn't say which numbers are lighting up. If the correct numbers lite in their respective holes,
then I believe the "D" gear is 180* off on the assy.
Then I believe you have to remove the gear and rotate the "D" assy. 180* so the plastic numbers
match the Reset position. Then insert the "D" gear to align with the other gears A,B, and C.
***** Not sure....... I might be wrong. ******