I bought a GT mach one mini that I need help identifying what the serial number means. The serial number is stamped on the underside of the bottom bracket. The serial number reads YC96060081. GT is also stamped on the back side of the top tube under the seat and on the rear drop outs. All of the decals seam original. The GT decal on the front of the head tube and the seat post both say Santa Ana California and there is a 100% 4130 cro-not decal also on the seat post just under the round GT decal. I am very curious what the year of this bike is. I have been told several different things and I am looking for some more opinions.