Have a good look at your crash bars if you have them.
Every time I have been asked to find the source of a noise on a Strom it has been the crash bars.
Fit a ratchet strap to the bars and pull tight, then ride to see if anything has changed.
This can be done with many parts of the bike to help find the source.
Some of the 19 rides in my shed
2014 V2, Snoopy
2009 Wee, Pumbaa the pig
WR450F, The Blue Postie Bike
YZ250N smoker with rego, Stinky.
Yamaha MT09 (FZ09), The Scud missile.
Club Lead not Club Med.
He with the most toys wins.
Out of my depth in a puddle.
Live life on the edge you will see more that way.
Ridding a motorcycle keeps things in balance.
At the end of each trail and at the end of each day history is made.