Well, the range works fine. But it's almost an inch and a half DEEPER than my cutout. 
The range is in a peninsula between kitchen and breakfast room, so the cutout depth has a fixed maximum. But it was workable for the previous two slide-ins (non-Frigidaire) purchased over the last thirty years. Those earlier ranges stuck out into the kitchen about an inch and a half. 
The new Frigidaire sticks out three inches, and it's not physically possible to do anything about it. 
It never occurred to me, in shopping for a slide-in range, to check for the DEPTH of the range.