yes i need help, when i adjusted the chain which was very loose, some grinding noises appeared, at first i thought its the wheel bearings and I damaged them by tightening the big bolt too that holds the rear wheel to much, but the noises are loud and come from the front, right where the drive sprocket is, its like it grinds on and off when its turning, it grinds loud so Im ashamed to ride it, can somebody help me please, i dont know what i did to my baby:crying: