This has been bugging me for a while and I am one just one step away from taking to a repair shop.
My guitar is perfectly tuned and I have also adjusted the intonation (hopefully). The problem is that at particular positions, I get this annoying like buzz/rattling noise. Also, let's say I get this bad noise at position call it 'B', now, I can fine tune the guitar to solve this, but now position 'A' starts sounding bad.
Things I have tried:
1. Lower the pick ups
2. Raise the string action (remove fret buzz)
3. Lower the gain on the amp