Spout poorly constructed

From value for money (Euro / liter) awesome. And very timeless, simple but successful design. From the outside! From the inside of the spout is a disaster!
The black plastic piece attached to the stainless steel bottle has naturally inside a thread, into which one purely screwed the stopper / lid. Unfortunately, this construction inside a rim or collar, which projects into the bottle into space. So when pouring always plenty of fluid lags behind this collar, which can be removed only with vigorous shaking or a dry cloth.

As I put my head down Teapots always after rinsing to dry and then again without looking fresh tea had poured later that was a big surprise! Everything tasted like detergent. Würg!

Moreover verwurschtelt at my copy of the silicone seal between the plastic head and the metal pot used. So probably not sealed. This can be seen only with a flashlight and a dental mirror. Is namely behind the edge above / collar hidden. Since liquid and coffee grounds / tea leaves in the interstices would then quickly collect and probably make fungal cultures.

But now do not care - from the pot wants from us anyway no more drink!
Requires someone a "thermo-watering" for his houseplants?