u sure its broken? u not jus failing at beatmatching?
if the are belt drive decks then it's more likley to be the belt has stretched with time rather than ur pitch
if u can get 2 copies of the same tune (same producer if u cant, jus aslong as the tunes are the same speed), put them on 0 and mix em together, once they are in time jus leave em and u'll see...
and if they are broken i wouldn't start fiddling with it urself, u'll only do more damage
it's harsh when u aint got funds but ur better off having to work harder with ur mixes than not at all...