Before you fine, do you mix well with a drill mounted mix stir! This is part of an article from Tim Vadergrift who is the Tech and spokesperson for Winexpert wines written in Winemaker Magazine.
"Finally, what about sulfite? It can be pulled out of solution by the action of vacuum. In this case, the answer is actually “yep, but.” You can lose one or two parts per million (ppm) of free SO2 to a strong vacuum over a period of hours. However, a couple of parts per million are beneath the ability of most home tests to measure, and not enough to warrant the addition of any extra sulfite to your kit wine.
I think that some people can sense things in life more then others and my mouth is extremely sensitive to C02 it seems. I have aged a few wines over a year and still had a lot of gas. From what I take though kit wines tend to retain C02 much more so then fresh grape wines and Id love to hear a theory on why that is, anyone. Everyone that makes wine from grapes says that degassing is not needed and everyone making kits is on the opposite side of this poll, so its has to be the difference.