If you want to get into the inner walls, do you have to deploy the second bunch of wall breakers within a certain time after the first bunch blows the wall?
Reasoning... I didn't have a problem getting into the inner walls before the hero update but it seems wb got dumber. (And yes, I do realize they are skeletons therefore they don't have a brain) Not saying that the update was the cause but that's around the time I noticed it. I just attacked someone (major fail) with walls as a square in a square in a square (square bullseye). I drop 2 wb, blows 1 wall. Drop 2 more on same spot, blows wall next to existing hole. Drop 2 more on same spot, blows wall on other side of the first opening. I continued this 2 more time still trying to get to the second layer and it was a fail. So far 10 wb used. I use last 5 at the same spot to test the wb. Same thing. 15 wb and not 1 went for the inner wall, just blew a hole 7 spaces wide in the first wall. Lucky for me that persons TH was outside, I got the 1 star and left.

