Originally Posted by old&slow

I had alot of leakage problems when i ran just a single stock o ring on lower cap position. I had used lots of green slime an still leaked . I tried the rcb8 o rings like someone mentioned on here and those were even worse , leaked and sucked air into shock. Finally tore down shocks , polished shafts, clearanced out the bottom caps as they were tight and caused a bit of friction, ran upper and lower x seals ( which are way overpriced as i was at the track and needed something to replace the rcb8 seals ) and they are pretty smooth now.