Hi guys, I've not long ago brought a quad that I was told was a 150cc, but it has no vin plate, docs etc but it does have 3 different lots of numbers on the barrel could u help me out with these please? The numbers are; bottom of barrel ZS153507, half way up barrel ZS153507JJ and then opposite side right at the bottom it's got ZS161FMJ 85800001, do these numbers mean anything to anyone???!!!