Lol yeah the screwdriver works surprisingly well. I have a Matco stethoscope though (I'm an auto mechanic). Nothing sounds unusual. It still makes a few metallic scraping/scratching kinds of noises while riding, especially when it's warm, but most of it's gone now.
Must have been the CCT adjusting up. I just can't believe that it would go 2+ years sounding like this and suddenly, out of the blue, adjust up.....I guess it was stuck.
Currently my daily beater- 30k+ and counting the miles
07 ZX6R, lime green. Bafflectomy performed on stock muffler, disabled exhaust valve, Jumper mod, K&N air filter, PC3 with generic Euro-spec map, NGK Iridium plugs, Motul 300V & K&N oil filter, Healtech X-TRE, Drive Systems Superlite X2 steel sprockets -1/+3, Green EK chain, EBC Sintered HH pads front and rear, Dunlop Sportmax Q2's.