Just curious if anyone could tell me how long the breaking-in period is for strings. I have a set of hybrid hellicores on a new upright bass I purchased. I have been playing for about 2 hours a day since December 30th. I notice I still have to tune it every day, sometimes a couple times a day if I play a lot. I know from experience with other instruments that certain strings take time to stretch and then stabilize. I just wondered what everyone's experience is with upright bass strings. How long before they stabilize?