By the Way..
A question of sound is the idle lowering..
I got an mechanic trick.
The carvurator has an electronic idle bypass to hold the idle speed.
I've drilled a hole into the carburator an set an bild in it. At the outside i build an bracket to adjust the screw inside the carburator. So i can control the air flow thats passed the electronic bypass by closed trottle.
I can regulate the idle speed down to zero...
At the picture you will the the screw outside the carburator - between the air filter an the first zylinder..
I sounds like a Harley in Idle Speed...
regards
Dirk