I normally lube and size my cases, then prime them, powder them, stick a bullet in and then tumble them. I know i should tumble after the lube and size to get the lube off, but the corn cob sticks in the primer holes etc... and i haven't had any issues in the past. This batch, i didn't have any problem creating them, but when i threw it in the tumbler, it seems like all the black gunk in the corn cob stuck to the lube and isn't coming off despite a few hours of tumbling. Never had an issue with this before. So far the only "easy" way to get the gunk off is to scratch it off with a finger nail. Any suggestions on an easier way to get this now black putty off? I tried using a but of the lube on a cloth, gun oil, and wd-40.