Hello together, we bought a 2000 NB, it was really good there only what makes me stutty: the belt disc has an unround run. The recording on the crankshaft has actually been very quiet and only the disc has been iced. Have heard of the problem so far only at the NA, you know if there is enough exchange of the belt disc or will have something there. Can it be that I only speak well, because it has already been bought but: according to my logic the recording would have the pulley on the crankshaft also beautified if it were this one. There I also get better instruction. Thanks already for your help Justin