Sadly, the expectations for a set up for home table recreational users is in a completely different ballpark than what serious / knowledgeable players expect / require.I think that this is by FAR the best advice in having a table set up- you simply MUST be knowledgeable on all aspects prior to the install and make sure that you and the installer are on the same page in terms of plans and expectations otherwise expect problems - items of note- expectations in terms of cloth, cushions, alignments, tightness, leveling, pocket size and pocket set up, ball movement off the rails, etc. etc.
The more that I become educated on this topic and from my own history of installs back when I had home tables in the Northeast- the more I realize that there are actually very few people who can install a pool table to the specifications of the most discerning pool players. In fact, most pool table installers that I have encountered actually know little about how a perfect table should play. Their knowledge of proper pocket configuration and cushion speed/ set/up is usually severely lacking.
Installation crews that deliver and set up tables for many of your home table dealers often have limited experience setting up tables to the expectations of a serious pool table mechanic. Usually they can get away with it since most home buyers are generally not knowledgeable in this realm.