hello all. shall we start this agian as ive had no help.im the proud owner of a wrx classic. i wiil make this as short as i can.i put 18"on it then found they rubbed when going over bumpes or turning too sharp.i was offered some hks huyper Ds .since ive put them on the car no rubbing BUT they keep knocking bad .i seen someones post about gressing them and it worket but now its come back. now how can i tell if these shocks have had it or is here some thing i can do to solve this any help will be welcome and with much thanks .ceebow