Basicly, my rings went on my Yamaha DTR 125 , took to my local Yamaha dealer and had new piston rings etc put in at a cost. I picked up my bike, noticing it has changed a lot in sound very quiet, and was riding a considerable amount worse, the bike seemed very powerless compared to before I could hear the power band roaring, and now it seems although there is no power,maybe because its quieter and I cannot hear it I don't know.But now I thought when replacing piston and rings, the bike would run and sound a hell of a lot better, and possibly faster. ( Bare in mind I do know I should be wearing it in but still, the bike shouldn't run and sound worse?) Should it, correct me if I'm wrong, all help appreciated thanks.