In our previous house when we remodeled we relied on Moen so naturally when building our new home we ordered Moen products for the builder to use.  When we had an issue in this new house we couldn't allow the subcontractor in (COVID family risk issue).  Anyway I looked at the instructions that the builder left and saw the issue immediately.  Moen's manuals were clear enough  that I was able to identify the issue and fix without calling the builder or Moen.