Yes I don't know that RTA either, but is this your first RTA? Everything seems a bit different in those at first, and wicking is much harder. Your coils look good, I'd consider experimenting with your wicking, but you may not get the same "taste and feel" that you will with premanufactured coils, it's just not the same. Have you tried any other liquids in it other than those two, you might be surprised with the taste of a new liquid that doesn't taste like you are "expecting" it to taste in the BBB tank that you have? Though, I haven't really heard of this problem before, especially since you took it in to get it coiled.
Airflow matters, but also you may want to try starting out Very Low on your wattage and priming..... You may find the sweet spot in this RTA is much lower than the BB.
Good luck!
Anna