Just wipe them clean and ignore the seal problem. 50cc of oil is nothing!

What's the worse that could happen? The seal problem gets worse, you lose more oil, the oil drips onto the tyre, you highside flat out coming out of clearway breaking lots of bones and destroying the bike. But that couldn't possibly happen right?

Or better than that, your oil takes out another rider who breaks lots of bones and destroys his/her bike. Then you'd feel really good about the fact that it's an easy fix and you couldn't be bothered.

Fix it.

Sorry to sound a little miserable but having gone down on another rider's oil I think I've got a good case. His problem was the countershaft seal seeping, as t seal was damaged putting the tranny in. It has shown puffs of smoke in morning warm up and they claimed to have fixed it, but lap two saw him highside right in front of me, and I lost the front on the juice, along with three other riders behind me. Luckily I was able to continue, but he broke bones.