Everybody hates open or can covered tuners right? I certainly do/did but as I pointed out in a recent post, some are better than others. Specifically, the ones that have the worm gear completely surrounded on the mounting plate and a tension screw to keep it snug as opposed to the standard old hooks that just keep them in place. That is a weak point which bends up, back and or sideways resulting in play which causes the gear to misalign into the sprocket gear which causes more wear and in no-time a huge gap will form between tuning up or down as well as bindinding of the gears when it starts to actually move. The other issue is the screw that holds the sprocket loosens and contributes the same problems. On the better open tuners shown, regular tightening of the screws will keep them working quite well especially if a touch of Vaseline or whatever has initially been dabbed on the worm. On a standard sealed die-cast tuner the worm gear is firmly held in place by the case so that is no longer an issue but there is still a screw under the cover and they definately come loose. The only way you can really tell is when the tuner and sleeve are removed. The post should move a little, but if you can stir it around, the screw is loose. And there (finally huh!) is the dilemma. The screw and gear won't fall out because of the cover. It won't have all the binding issues but it won't keep your tuning rock solid because there is a lot of play which isn't noticeable because of the tension screw on the button. The solution of course is to remove the cover and tighten the screw. The dilemma is how to get that damn cover off and back on without mangling it! Anyone ever had success or a technique to do that???