[COLOR="Blue"]Purchased new refrigerator / freezer and had installer move existing Maytag side/side refrigerator to the garage to serve as a secondary for drinks etc. Freezer is cold, refrigerator is 45 - 52 degrees[/COLOR]
Check the freezer temperature just cold may not be good enough to cool down the fresh food section. It should be around 0 degrees F.
Also how long have you let it run, give it at least 24 hours before concluding that you have a problem.

[COLOR="Blue"]and so I checked the coils for icing. Clean as a whistle, evaporator fan was blowing.[/COLOR]
This sort of concerns me as usually after a unit has had the doors opened you would expect that the coils would be condensing out the moisture from the air in the unit so you would see frost. A coating of frost is normal except right after a defrost cycle.

[COLOR="Blue"]Refrigerator was tilted back about 45 degrees when moved to clear some objects that were hanging, could that have led to the problem?[/COLOR]
Usually tilting back does not cause a problem. It is a good idea to leave a fridge unplugged for 24 hours after it is moved just in case some oil got up into the lines..