Just from reading over this, did you by chance add any nutrient and energizer mid way through the primary stage? Check you SG periodically and whip each time, when your SG reached about 1.050 or 1.040 add more nutrient and energizer, and give it a good whip. Plus I would add 2 tsp of nutrient for 1 tsp of energizer. From my understanding it will keep the sulpher smell down and keep your yeast from stalling in something acidic like Lemonade. If you didn't do that, I'm going to guess that could be the reason it stalled. However when I make Skeeter pee I use only slurry, and have had great luck. Never tried making a slurry with packets of yeast. Probably opposed to adding more yeast, you could try adding a bit more nutrient and energizer and giving it a good whip, and whipping it every 24hrs to see if you get some ferment action. If it doesn't get it going I would put it to clear with some sparkolloid, and consume that tasty beverage.