hey to all

i recently rebuild the shocks for my girlfriends b3. the rear ones are fine but i have a problem with the front ones. no matter how much i tighten them they leak. it isnt really every time they compress, but after a while a little bit of shock oil will sips through. i redid them but same thing.
i really dont know what to do. can anyone please offer some advice on this?
thanx for reading
cheers