We have the same problem. I used the same steps as you, then got frustrated and tried a old fashion method. Take 1 egg white add a small amount of salt. Then beat the salt into the egg. Add in a cup of the wine to the egg white salt mixture. Beat the wine-egg-salt mix till large frothy bubbles appear. Add the mix to a 5 gallon carboy and stir. Within hours it should start clearing. For best results leave wine in the cold first then add egg.