To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.
Conceptually, repairing a component such as the window regulator seems like it could be a daunting task -- especially because there doesn't seem to be any online tutorial videos. In reality this is an easy fix. Total time is less than two hours. There isn't anything complicated, just loosening and tightening nuts and using common sense to install and reassemble.