Hero MotoCorp overall two-wheeler despatches in May grew just under 2% year on year, driven mainly by strong scooter sales, according to the company’s exchange filing late Sunday. Export growth remained flat, contrasting with broader industry trends.The company sold 507,701 units to dealerships in May, up slightly from 498,255 units a year ago. So far this financial year, it has despatched 813,107 two-wheelers, down about 21% compared with the same period last year.