I've had my dual boiler for a few months, and it was running great except the opv was at 11.5 bars from factory. I wanted it at 9, and I opened the machine and adjusted it down to ~9. To my knowledge I didn't damage anything or make any mistakes, but now the pressures seems to climb a bit slower and a small amount of steam comes out of the grouphead when I pull shots.

Is a small amount of steam normal? I don't hear any abnormal hissing or see any water leaking from the solenoid or machine. Does anyone know what this could be? Or the best way to find out? Thank you!