I spoke to the previous moto owner. He advertised this chain right after the replacement as it didn't stick to the parameters from the start. Unfortunately, they did not accept the complaint. So it's not worth spending more money on "gold". I will drive a little and exchange it for RK
Thanks for the information and suggestion
I also think this is a chain problem.
Yesterday I measured the deviation of SPROCKET, DRIVEN and it is within 1mm.
The only thing that worries me is that the chain (gold DID) has a run of about 1500 km. A smooth ride without surges.
The chain tension...