trem stud squeaky
the uv70p is the only inserts/studs-equipped locking trem of my guitars. (The other two older ones have the oldest screw-pivots). Those studs are also locking, in the sense that they have a concentric minor bolt used to lock down the stud in place. So the smaller bolt (unseen by bare eye) must be untightened in order for the stud to be able to screw in clock-wise. I have noticed that when I turn the stud (clockwise or counter-clockwise), it produces a noise, a squeak, like there is friction between the stud's threads and the insert's (bushing's) threads. Is this bad? And if yes, how can it be remedied? Some wd40? Maybe grease or engine oil of some sort?