Long time lurker, first time poster here. I was desperately trying to find the solution to my clutch pushrod seal leak and was referred to this thread by the superduke forum.
With all of the tips in this thread, I was able to successfully remove the oiler jet for the pushrod (using the flathead screwdriver bit/q-tip approach) and cleaned the jet out with a spot of guitar string and some brake cleaner. Next thing I know, there's no more oil leak behind my slave cylinder! (At least for now.)
From the look of how tiny that hole is, I'm probably going to invest in a bit larger jet, because that thing is so miniscule, it has to be practically useless!
Now, it's time to ride!