Telling the assembled group of third-graders that they had to oil it down and tie it up real good, 38-year-old Killeen Kougars coach Dan Behling explained, in creepy detail, how to break in a baseball glove Monday. 'A good glove will be with you for a long time, so you got to treat it like your girl,' Behling said to the innocent 9-year-olds as they stared at their feet. 'Don't use the cheap stuff. Get good oil. It'll feel tight at first, but just keep pounding and pounding. She'll loosen up.' Despite their discomfort, members of the team were unable to argue with the method, which resulted in a smooth, supple glove that warmly caressedrather than loosely hung offthe hand. 