Need some help. My LX470 suddenly had a hard time starting. No prior symptoms. Drove fine all day Saturday and symptoms propped up that evening. Cranks and stutters (some metallic sound) before starting.Replaced an old Bosch battery with a yellow top since the Bosch was old and figured I would start with that.Still presents the same afterward. Once started, engine idles smoothly. Haven't taken for a test drive.