Hi I´ve been told that my yz85 is a 2012 engine thats been tuned and has also been put into a blue aluminium frame to make it lighter the frame isn´t coming up online with its vin number or its reading back to a yz 250 qich I don´t know whats going on there im not sure how to tell what year it is now but its running !! If you could help me then I´d be really grateful guys