Been brewing beer for about 10years , all extract up till now. I think my first all grain batch in my new Fast Ferment conical fermenter was doomed from the start as I noticed no airlock activity during fermentation. Once fermenter was empty as after bottling I recovered the gasket down inside, must have fell off when screwing the lid on. I contacted fast Ferment and they said they were on the 4th generation gasket which they send me replacement. Anyway the beer was an American IPA and tasted more yeasty then expected and a few bottles were overly carbonated. The last couple I just dumped down the drain as they were way over carbonated and smelled off. Has anyone had this experience? Could it have been from the bad seal and oxygen exposure? Hopefully the next batch with the new lid seal gasket comes out better- I'll find out in a few weeks. Cheers!