Sounds like you need to start over. Clean it off and reseason. Once its freshly seasoned Don't wash with hot soapy water for awhile - just wipe it out clean. If necessary use soap sparingly, dry off and coat with oil. After neuromas uses washing and drying will be fine. Cast iron likes use. The more its used the better it gets.
I really don't want to start over. I've done that several times. It's also possible I'm not seasoning enough. I see where people go seven or eight rounds of seasoning, I try to get three before I use it.