According to my math its a dump valve. You know when you crack that open, it stays open once it opens, there is no pressure difference to close it and valve spring tension keeps it open indefinitely. Marko
But the idea is sound, it would be easy to open. Balanced valve is the future, no matter how it's done. Reduced hammer strike means reduced vibrations in the frame during firing cycle. It's all about the harmonics in the end. Marko