I pulled my fork leg apart this fall, the right leg (the one with the big loopy round thing on it) and there was almost a tea spoon of grey goop in the leg. I had changed the fork seal a year earlier but obviously didn't do a good job of draining and cleaning the fork tubes before re-assembly. I did the 35mm film trick and used a fast food wrapper once when I was touring to clean out the seal, but the obvious fix was to take it apart and properly inspect the fork tube. I would also make sure you don't have any corrosion or nicks on your tubes, they will cut up a seal in no time. Sometimes you can get lucky with a scotch brite pad to clean it up. With one brake rotor, a drop of fork oil can be disastrous. Ask me!!! I didn't realized i had a small leak, The Uly obviously doesnt get washed enough. I grabbed by front brake and the bike didn't even try to slow down. Thankfully it was a clear traffic light...