Been stuck on this level for a couple of weeks now and am noticing that some things that should work as expected don't.
For example: combining a Striped with a Wrapped blows away a 3 wide path both vertically and horizontally, unless there is another power-up in the way, in which case the destruction STOPS at that item and does no further damage.
If you create a popcorn ball on the LEFT side of the board, anything you do on the RIGHT is liable to set it off without anything hitting it or moving anywhere near it.