SCHAMP, BROZEK, HARRINGTON & NIGHTINGALE TAKE CARE OF BUSINESS   By Staff           CANTON – The Canton/Galva boys pushed its record to 12-5 after a three-game stretch that included convincing wins over Herington (70-44) and Peabody/Burns (75-40) on Tuesday and Friday before a late-game stumble became a loss to Linn (51-56) on Saturday.           Canton‑Galva now, 12-5 overall, turns its attention to a demanding stretch to close the regular season, beginning with a Monday tri