Ok I'm new to wine making but am making this kit as my first one. I have followed the instructions to a T. Everything has went well until this degassing step. Everything read right on the hydrometer according to the instructions and I started the 2 minute degassing step using a whip attached to my dewalt drill. I did it for 2 minutes as they suggested and then checked it by drawing a sample and shaking it with my hand over the vial and then let go and it still had pressure. So I did this like 3 more times and then decided to shake the carboy vigorously by hand which I did by keeping the hole covered while I was shaking. I would stop uncover and gas would escape. I did this about 5 times. I then checked again in the vial and still had presssure. What am I doing wrong? I finally gave up since I had degassed about 15 minutes total. Is this sufficient? This is the kit.
White Zinfandel (Vintner's Reserve)