I recently started using Peterson’s iStroboSoft strobe tuner app to tune my guitars, and I'm running into a couple of common problems, especially when tuning my Fender Standard Precision Bass.
I’ll get a string tuned just right, and then it drifts a couple cents out of tune as soon as I let go of the tuning knob. I suspect that I’m putting a little tension on the neck while I’m tuning, but I’m concerned that there might be a problem with my tuners.
My bass E is especially difficult to tune, as the pitch steadily drifts flatter as I’m tuning and rarely stabilizes on a pitch long enough to tune it, even if I strike the note very gently with the tone knob rolled off.
I figure that these problems are mainly because I’m not accustomed to the extreme precision of the strobe tuner, but I’m a little concerned that it may indicate a problem with my instrument’s tuners, nut, or neck. Is there anything I can do to use the strobe tuner more effectively? How can I tell the difference between problems with my tuning technique and problems with the instrument itself?