According to my recipe, the final gravity should've been 1015, but I measured 1010 on bottling day. I rechecked ingredients and yeast but everything is correct. No need to mention that there are no sugar additions. How is this possible? Fermentis/Safale Us-05 is a very common, popular yeast strain so the recipe should be correct. I added the full package because my recipe was a little high on original gravity, could this be the reason?