Made 2 batches 4 gallon of "wine" with concord and wit grapes, and just read in an unrelated post that headspace needs to kept to a minimum, so since they are 4 gallon batches in 5 gallon carboys and they are a month and a half old, are they messed up? and if not what is the fix? I looked at wally world for a 4 gallon container to no avail. even thought about a polyethelene water bag, but I figgure that would flavor it unpleasantly.