I made a lager with OG 1055. FG was supposed to be 1000. Turned out to be 994 the ABV was supposed to be 5.2% ended up at 6.8%. I'm trying to figure out what happened. The recipe called for amylo 300 after yeast. Could this be the reason? Also problem with carbing. I have a quikcarb. Good head on beer but after bottling , very little head on beer when I pour into glass. I have tried laying beer on the side to see if caps leaking but same result. Beer is not flat just very little head of foam. Too much carb?