Find a highly rated scone recipe on this site by using the search bar at the top of the page. Compare it to the recipe you are using. This might give you a clue. And…we can’t help you without seeing the recipe you are using.
I would compare it to another simple scone recipe: http://allrecipes.com/Recipe/Grandma-Johnsons-Scones/Detail.aspx?event8=1&prop24=SR_Title&e11=grandmas%20scones&e8=Quick%20Search&event10=1&e7=community%20list