Just brewed a batch of Midwest simcoe ipa. It's supposed to have an OG of 1.065 but my water ended up slightly below 5 gal. and my OG reading was closer to 1.068. The kit came with a wyeast American ale smack pack. At this high of an OG should I add a little more yeast? just curious as the packs say they are good to 1.060???