Hello, I just watched this video (from you) on youtube that explains how to replace the timing belt. In the video, the guy says that it's difficult to get the high pressure pump back to the right position. VW also say the same in official replacement guides. They also say that a small shift has no impact. It's quite strange from my point of view. I can understand that there is no impact on engine performances, but I have the following questions. 1. Why do we need to loosen the bolts on the high-pressure? What about replacing the timing belt without touching to these bolts? 2. Same for the camshaft gear. Why is it needed to loosen camshaft gear bolts if we put the new timing belt exactly in the same position? I don't understand why this fine positioning is required? Thank for the time you will take to answer to me.