The three screws that hold the plastic front sprocket guard on are always loose. The bottom one is often missing. Side stand pivot bolt - another forgotten tq check item that's always loose.
Just spent two hours going over our new-to-us 658 with 20K kms on it. I would guess no one's looked at it too hard even with full Dealer only service history. Many undertorqued things found like handlebars, triple clamp bolts etc. Wheels overtorqued and chain too tight. All part of the Zen of motorcycle maintenance. Besides, it's "Her" bike.