As an aside, I would have gladly added 2 pounds to my headstock if it meant that the tuners held the string to the post. I went through one type of locker which failed in a couple of gigs, then tried another kind that didn't have a rubber gasket. Though it altered the appearance of my headstock and added a little weight, I was so happy when I finally found a solution to my problem! Lockers do (at least the kind I installed,) in fact help tuning stability to a very noticeable level on a hard tail tele with no trem bar. I know this because I have an extremely strong left hand that pulls any strings flat, and can at times with strumming achieve the same result. On countless guitars, over many years, if I was not gingerly, I would do this to any guitar put in front of me, only a tad less so on very heavy strings like 13-56 acoustics that were broken in well. I stretched, I prepped, I tried many methods, I played many other people's guitars that they were never able to knock out of tune themselves. The string itself will pull from the post much easier without a locker, and especially noticeable if you do forceful downward bends and strum hard, no matter the prep and load method. Since I installed the lockers, it is a night and day difference. Cold/hot extremes still will play a role, but combining stretching and careful winding, combined with the right lockers, tuning stability on a regular tele is improved at least 80 percent (in my case.) I got over the look and additional weight in about 5 minutes. Now I focus on playing my guitar, and am not afraid neck vibrato, etc. To everyone that doesn't need them, your technique is probably much better than mine, but I do think there are players that lockers are more suited for.