I am buying a 2001 Super T with 6" travel and I am wondering :mumble: why cant I up grade it to 7" buy switching out the cartridges or something. Is the lowers shorter on the 01's than the 02's or what cause I dont see much of a difference between the 01's and 02's I emailed marzocchi and they said I cant but can some one please tell me why?????