Re: herro, i think i might be having some stem problems
Ahh yeah OK. So they ports are welded on. Yeah i believe what you thought was a bubble was actually water from cleaning it the day before.
There could be a leak. Plug the tiny hole (located under the heart, next to the downstem) leading to the hose port you want to check with your finger; then blow into that hose port, and if you hear air there is for sure a leak.