Internal improvement seems like a concept that should be long gone nearly 60 games into an 82-game NBA season, but the Pistons feel like they still have growing to do — particularly on the defensive end. Thought to be a strength when this team was being put together, the Pistons’ defense has been the biggest disappointment, as they’re on the outside looking in at the Eastern Conference playoff race. But they’re not ready to embrace the notion of being primarily an offensive team that only hopes to get a few stops to win games. In just one game this month, a 93-89 loss to the Cleveland Cavaliers at The Palace, has the winner not reached over 100 points. “I don’t think we’re at that point, not at that point at all,” forward Greg Monroe said. Pistons interim coach John Loyer is still hammering home the fact that for this team to have any traction for consistency, it has to begin on the defensive end. “We’re definitely spending time each day working on the things we see we’re not doing. It has to be habit-forming,” Loyer said. “It can’t be this scheme for this team or that scheme for that team. It’s got to be something we’re doing every day, tweaking we do for each team.