Hi! I just borrowed a used Axis SS, however, i just changed the strings and ever since i have only been able to play for a couple of minutes before one of the strings suddenly go out of tune, the rest of the strings consequently following. I am quite sure it had a lot better tuning stability before i changed the strings, however i only played it for 15 minutes before changing, so I'm not quite sure...
What could be the problem?

What could be the problem?
