You can adjust the scraper position (2, Fig. 1-2) by changing the position of the adjustment lever (1, Fig. 16-18). By this way excess seed is scraped and one piece of seed hold on to one hole. Position of the scraper should be adjusted according to any changes on discs or seed types. Small numbers are for small seed and large numbers are for large seed (2, Fig.1-5) on the scraper scale.