i picked up a jincheng lynx 50 a couple days ago for dirt cheap. the only things wrong is the rear brakes went out and they removed them and it tore up the rear rim , the "brake drum" and the pads . but i am having the hardest time trying to find the parts to fix it !!!!!!! can anyone point me in any direction to find a site or any other bikes that i can use as a cross reference so i can get this up and running for my kid !!??