Strings are suppoused to be smooth, as well as the neck.

The body is not suppoused to be smooth.

The square controller on the body is suppoused to be use if every string is been played, if not there is one controller for each string.

The square control on the neck of the guitar is suppoused to choose the note for each string and it has three controllers to mark the note. The central goes down, the other two are on the frets after and before the note.

This works so well if you have a close up scene

It has controllers for the turning pegs.

The main controller is on the body of the guitar, where the character put the leg

If the move tool don't orient according to de guitar, go to tool settings, move settings, then in axis orientation, choose object. it should work

Just enjoy it!!!