That's great advice Dave. I've read many, many threads on this site in my time here. It's really interesting to note how many times a person starts troubleshooting a weird sound, thinking it's something in particular, only to be led by others to discover it's something totally different.
And that's not only in relation to known issues, but as a general attitude to troubleshooting.
Not long ago I was concerned about a new high-pitched rattle that my bike made when under load. It stopped when I pulled the clutch. I initially feared a problem with the crankcase. And was imaging the worst I remembered how many times a member here has asked "what have you changed recently, before the problem started?"
I had installed bar-end mirrors. It turned out the glass was loose in one of them! That was the rattle lol