@dreadstpauli how many locs did you start out with and how many did you end up with? Did you go full natural, tnr, backcomb
sorry i have never counted them, but it is normal that it starts somewhere while other parts seem to do nothing! I have started full natural and my hair has started where i have slept most on (back first and a little the sides later) I would not wash every day, try every 2nd and at the end of your wash rinse with really cold water. The water will close your pores and after some period of adjusting it should get way less oily. If you want, you can only rinse with cold water every 2nd day, without shampooing. That helped me a lot in the early stages. I have washed every 2 or 3 days.
The gunk could also be residue from the shampoo you use. It is best to use special shampoo for dreadlocks, or at least some natural, residue free soaps or shampoos.