pedal - Maxon st9 pro+ (tubescreamer). using an adaptor as i always have. i see it is still being powered because there is an (9v or 18v) indicator that always stays lit up depending on what you have it set to. that is still lit up. the problem is that the footswitch wont engage. if i press (AND HOLD) the switch, the light comes on and the fx turns on but it wont click and STAY on. when i let go of the switch it just turns off again instead of staying on as it should. seeing as i bought it brand new only about a year ago and take VERY good care of it, i cant see why this is happening. anyone know whats up? i LOVE this pedal and paid A LOT for it, kind of freaking out a little. thanks.