I brewed up 2 cans of LME (Mountmellick Irish Stout) to make 5 gallons. My OG was 1.070 and got it down to 1.020. So, tonight I decided to bottle (with the help of my "wifey") and prepared the priming solution. I thought the bag of dextrose contained roughly around a cup. After I bottled I realized it contained 4 cups. Also, on my last bottle when I started pulling air I looked up at the tilted carboy & noticed the yeast cake was gone...What should I expect?