I observed mineral deposits on the gasket at the bottom of the thread, after cleaning did not help with steam escaping.
I disassembled the lid and there is a pressure escape valve in the lid where I tried to re-extend the spring to no affect.
The one fix where I only have 1 test so far with only light tightening on the lid and no steam, was '''cleaning the holes in the metal filter basket'''. I held up to the light and noticed a lot of them were plugged. I scrubbed both sides of the filter and significantly opened up more of the holes (hold up to light to look through). I used a small amount of LCR lime remover on the filter basket and lots of rinsing. Smooth coffee brewing without steam!!!
The''' coffee grounds and metal holes together cause a high back pressure''' in the boiler compartment, which tries to escape through the safety valve in the lid