We could tell immediately that it didn’t line up correctly. We had to undo all the door hinges/screws, adjust the side panels so they lined up evenly with the entire section  so that the first step could begin. We didn’t have to drill any new holes thank goodness. Then it assembled just fine and looks great! Tip: put cable box/tv components in their spot and lay the cords as you set the back panel and before you add the top.