I have 3 ktm,s rebuilt the suspension 3 months ago on all 3 all 3 are 2002 sx,s it is winter here and all 3 are kept in a heated garage workshop I noticed one has a collection of oil on fork caps wiped it off and 3 weeks later again then in another 3 weeks it apears to coming from under the black rebound adjusters or is is from the preload adjuster and what to do to repair all bikes are on stands.