i didnt get a chance to introduce myself but i'm a prospective zx3 owner and i need help as to why the zx3 i'm looking at grinds all gears... the guy i'm buying it off of does know how to drive and i know because we've raced but before he sells me this car i would like to find out why it grinds in every gear all of the sudden. is it the trans? clutch???? i need help!!! please?