Bose A20 loose boom fix

[Mrfixit]

Here's a simple fix for a loose boom on a Bose A20 headset. I used some 8lb, 0.010" dia fishing line. Where the boom pivots at the headset, wrap the fishing line twice in the crevice between the boom and the headset. Pull it tight, then tie a knot. Worked well to tighten it up. We'll see how long it lasts.