I have a 8 foot closet with 2 bi-fold doors and the person that installed them did not complete the work. He left a 1/2" - 3/4" gap between both doors when they are closed. How do I fix it so they come together without a gap and looks normal. And also both bifold doors when closed do not line up flush. One is slightly deeper than the other.

All the adjustment is done with the door pins, top and bottom, at the jamb side.

The top one is done with a phillips screwdriver and will take the door left or right, at the top only.

The lower pin is adjusted by lifting the whole door and setting it left or right at the bottom only.

These both take some trial and error adjustment.

The flush issue in the center can be tough, it is usually caused by one door being warped a little.

By closing the gap a the center, you will open up the gap at the sides, but maybe you can split the difference between the three and make it passable.

Good luck Roger

Do I have to take the bi-folds out in order to adjust them?