i noticed in the most recent editions of Fender's guitar owner's manuals , they've recommended tuning down to pitch when using locking tuners, as opposed to the regular ol' way of tuning up. i never saw that before , pretty sure it wasn't in the manual i got about 10 years ago. i've not been doing that & can't say i've had any problems. i will try the tuning down way next time and see if there's any improvement or difference. wondering what other people's experiences with this might be , if any.