This guitar is currently tuned to fourths. I'm getting used to this arrangement & liking the fact that not much positional shifts are involved to move quickly across the neck. However, the action past the 14th fret or so is horrible. So it left me with no choice...
... but to re-shim the pocket. Just a reminder to us all, we sometimes need to re-visit the tinkering done to our instruments. Things might not work at the first instance. This isn't a failure indicator, it simply means that if a certain tinkering works for one guitar, it doesn't mean it will work for another. Don't give up, ok? (Guitar: Ibanez GS121)