So a few weeks ago I noticed I was leaking a little bit of oil... then a lot of oil. After cleaning everything up, I've found that it's coming out of the speedo cable. It seems to be all up inside and possibly leaking out the top. I have been doing some carb work, but the speedo cable o-ring still looks fine. I even put some plumber's grease on it. I'm not over full on oil... only thing I can think of is something might be plugged up so it's forcing the oil up the speedo cable. Has anyone else experienced this?