i recently got a small crack in my alternator welded up, and forgot to take out the small pin which holds a small 5cm gear on it. When i got the alternator back, it was missing. the welding guy denied losing it so now i am without it. does anyone know where i can find this small pin, it is about 5cm long and 5mm wide. By the way the bike is a ZXR-250 (C) ..