I am very satisfied with these tuners, in all aspects. This specific mounting method is a bit problematic as backs of headstock are commonly crowded place. Out of my few ukuleles and bass guitars, I mounted this one on Mahalo bass solidbody "uke".
My only peeve is that there is no "underside" (clip or screw-in) to buy without tuner. If there were any, I would have a unmber of these mounts on my ukes and basses and probably a third NS Micro tuner.