I am getting close to finishing putting my engine together. I had a cracked casing and needed to replace a bunch of stuff. I bought some side-covers from a 98 KX250 to go on my 99. 98 and 99 covers are the same part number. I was buttoning everything all up and when i got to the last bolt Something is wrong here. I am thinking the engine is a different year, but what year is it? I have the engine serial number. i searched and searched how to decipher it with no luck. Does anyone know how to tell what year the engine is through the serial number? KX250LE006646 I found one site that said the 10th number is the year, which would make the engine a 2006?