That is rather curious, MagiAwen. Thank you for sharing your experiences, though I have a query for you: does a specific pattern show up inside this six month window? Does a specific type of event indicate that its time to work with E?
I've experienced a similar trend, though it has less to do with Elubatel & more to do with getting complacent; we all work in different cycles. Sometimes they're long cycles, others they're short. I've noticed that spirits like their marching orders, as Provenant put it.
I see it as maintenance, though, and don't rightly mind it. I have to sharpen the blades I use too, so maintenance cycles are, frankly, normal.
I do see Elubatel as a rather permanent addition, though. Were you to dismiss E from their involvement, then that would likely cause a change, but otherwise the NAP work literally calls E into a form of permanent service.