Did a lot of riding again today. Was accelerating into a busy intersection, heard and felt something strange.
Rode home and thought that everything was normal until I killed the engine and pushed the bike.
The clutch was engaged and would not disengage, although the release was working properly.
I did not notice it after hearing the noise because The engine also has the centrifgual clutch option.
The bearings on the clutch pads retainer, failed and caused the lock-up (races were scared).
I am not sure if this assembly can be purchased seperatly.