I found the tiny screw but it doesn’t seem to do anything. My trem bar just sits loose and can fall out with the lightest pull. It’s not secured in at all. It is a Cutlass HSS, one of the cheaper model ones at that.
This is a Sterling by Music Man Cutlass, right? Did you buy it new or used?
That's not the screw to tighten or stop the bar coming out. There are THREE screws in the trem block. One at the bottom (the one you mention) which just stop the bar going too deep, a large one that holds the retaining clip place, and a little grub screw near the top of the block, accessible on the top side of the body when you press the arm down to drop the string tension. That last one is what you want to tighten. See here...
Any information is appreciated. Received my Sterling Luke 100D today and am enjoying dialing in tones and learning the guitar. I wanted to ask about the Trem arm, as I have not seen this style of attachment before. Is it supposed to be so loose? Is it just a push / pull connection?
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