Short Ear!

Hello,

I have been baking sourdough for a while and the loaves are turning out ok, they taste nice, have good texture and crust but my ear doesn't go all the way along the bread. Am I scoring it incorrectly? Is it over/under proofed? Any help would be really appreciated. 

I can give you a run down of the recipe/method if that helps. 

Thanks,

Bec