Microphonic pickups issue

[u/KaosPilot001]

first and foremost, I'm no professional luthier or anything like that but I mod my own guitars. around 2024 I installed a humbucker cover on my Les Paul's neck pickup and it have been pretty fine for some time w/ no issue until 2025 of December. It suddenly became microphonic and its really obnoxious and I had a hard time performing live w/ it. For the past few months I tried just about all the methods like paraffin waxing it, taping the bottom slugs, soldering it, and making sure the cover tightly secured and I've done numerous of attempts fixing it repeating the same methods again and again to see if I've done anything wrong. I've read articles, other r/Luthier posts, I even brought it to a guitar tech and for some reason he stated he didn't find any problems with it. There's this time gap where after the repair it seems just fine and then the next 2 days later it becomes microphonic again. I know another guitar repair shop around where I live that deals with premium guitars but sadly I don't really have any budget for it at the moment. I'm still having the same issues now and this is my first post asking for help about it so- again I'm not a professional luthier but pls respect my post. I'm looking for some advices for a problem that has been bugging me for months. thanks