hi i have a question about a gytr piston. i bought it before i had read they had problems with cracking, so im sstuck with it. i bought it for my 08 yfz but im going to get something else for it. the book said it fit from 06 to 08 and would make 13 to 1 compression ratio. My question is will this work in my 04 yfz and what compression would it have. From what i have read it should be auround 13.5 or so. Just need a little help. Ps if it cracks in my old quad it will be ok because i need a excuse to upgrade the crank and do the oil mod.