one other thing.. A bore is supposed to be perfectly straight and round. We are talkin' thousandths of an inch.
It's not easy to overbore cylinders by tiny amounts so sometimes they hone it instead. A hone can take off a lot of meat in a hurry. Unfortunately, honing is far less accurate than is using a boring bar. It's easy to put a taper in a bore with a hone..
Careful examination and measurements will tell the story ..