I just added the F-pack to the one I had clearing...I bought two kits so I could do 30 bottles of each I put both F-packs of the Hard lemonade and its not to sweet, I don't think it needs any hard liquors/spirits, you can always add that per glass, with the discretion of the person drinking. I'm going to call WE tomorrow and see what they say about the stuck fermentation, if they don't have any suggestions I will just clear and add f-packs and call it good for that batch, but I believe they should at least be aware of the problem, if they aren't already, this doesn't seem to be a one off issue.