So I wasn't totally off base with the same side synchro thing. I will have to check my timing to see where everything falls into place.
I have mentioned this a couple of times, I discovered it after watching an clip from Alexander Popov's train, a dolphin kick combined with freestyle. I tired this and found it helped in learning the 2bk. As it is described, a flick, so the dolphin kick is reduced to a flick as well, instead of one leg flicking I tried both. I also find it helps with the legs splaying apart while trying to compensate the rotation. I only have to do this for a length of the pool or twice, 25-50 yards and see nice results.