This is somewhat annoying. I took my Pbass apart to put in a new pickup and since the pick guard was off, I figured I'd tighten the truss rod a 1/4 turn. The bass played fine after. I put the pickup in and made a recording. Didn't notice any issues, but then I noticed on the A string only, there was an acoustic clicking sound that I heard from the bass. The pickups do not pick it up, but it is loud enough to bother me when I play. Only on the A string. So I did a 1/4 turn back on the truss rod and it's gone by a little, but still there. I never had this issue in the past. Checked the pickup height and it is fine. The string is not hitting it. Only thing I can figure it maybe it is just touching the frets enough to click but not buzz? It's odd. I have the truss rod turned back to before when I had no issues. Any ideas on what to try next? I may just give it a day to settle in, but thought I'd post and see if anyone knows what I am talking about and has an idea. I guess I could always rewind the string if needed.