I was told the window goes in first and is lowered 3/4 of the way down. The side vent is then placed in. And then the window is raised into place. That sounds too easy? I need help aligning the three tracks, the two that go on under the window and the bottom one that aligns along the middle of the door? And how do I set the guide screws? Are the wheels on the inside of the guide screws or the inside of them?

Help!!