I recently scored a 78 P bass that I'm guessing went unplayed for many years due to it being in very nice condition. It came strung with what I think are Labella flats - they sound amazing, appear to be in great shape, but they are really sticky in some areas. Is there a general shelf-life for these type of strings? I wouldn't be surprised if these are 10 years old or more, although again they seem to been played very little. I would like to keep them, but only if the stickiness goes away. I also haven't used Labella's before so I'm not familiar with what they feel like when you're breaking them in.