I don't know what to do about this . . . hoping the collective wisdom
here might have some ideas. For the last 3 months or so, after every
flight, there are small streaks of oil on the inside of the lower


Has a similar problem when the oil leak seem impossible to find or fix.
It turned out that the crankcase vent tube had been repositioned so that it
pressurized the crankcase in flight.

Once moved---no more leak.