Hey. I dont know how its called in english but the round thing with balls inside fell apart. I was lucky the mechanuc was genious. He took the engine apart had to modify new part to fit. He also found a big stain in cylunder so it was also exchanged. He didnt charge me much, we became friends and had many beers. He says he fixed it so now should be no problems for 3ok km. Wr ll see. Bad the bad thing is the engine was open.