the ohlins on the SP's are notorious for weeping. mine have had about 9 upgrade of seal from ohlins and they still weep. it seems the longer they sit, the more they leak, i just wipe my sliders and ride it. if they're actually dripping, then they will need doing, and you need a special tool to get them apart.
just remember, once you spend the cash having the seals done don't be surprised if they weep.