Flex hones leave too rough a surface. I'd have it professionally properly honed if it needs it. With that little time it may not. I've used scotchbrite wrapped around a rigid hone to get a fresh surface and clean the bores without going appreciably bigger.

Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.