Examine all of the door panels' hinges. One of the first things to determine is whether the problem can be resolved without replacing any of the hinges. Are there any cracked or broken hinges? If that's the case, it's time to bring in a repair specialist. If that isn't the case, and you have some basic DIY skills, you might be able to solve the problem yourself. The first step is to gain a complete picture of the door glass panel alignment. Standing outside far enough back, take a look at all the panels together and try to assess how straight they are along the top and bottom against the line of the outer frame with all the doors fully shut (or as much as you can get them shut). Are all of the panels aligned? If this is not the case, there may be an issue which may be hinge related or another unrelated issue. Now open all of the door panels to the point where you can see all of the hinges. Do any of the hinges appear to be misaligned? Are there any loose screws or bolts, or are any screws missing altogether? If this is the case, replace or tighten the missing screws. By adjusting the hinges with an Allen Key, the gaps between the panels can be expanded or decreased horizontally, while also ensuring that the width of the gap between the panels from top