I did my first all grain brew yesterday. For the first time I thought it would be best to try one of the Northern Brew, brew in a bag kits. I started with the 5.5 gals that the directions said I should. After I mashed it said I would have about 4 gals of wort but I had around 4.75 gals. After the end of the boil I should have had 3 gals but I ended up with slightly less than 4 gals. OG was supposed to be 1.066 and I had about 1.068 (conversion from brix reading of 16.7). Any ideas about what I did wrong and what impact this might have on the beer?