When these felt string mutes were installed, were they always in the "mute" position (ie: always engaged)? Or were they adjustable like the early Stingray and Rickenbacker versions where you could adust them down when not in use? Can't really tell from the pictures I've been searching through but they just look like a flat spring metal with a felt block on the end, always engaged with the string. I'm guessing that you had to install them for string muting,and then remove them altogether if you didn't want the muting effect? (PIA or what!) The threads I've found here really don't say anything to answer my question. Anyone know for sure?