`Tit-a-tat' Feng Shui and Poison Arrows

Hi Cecil,

I came accross one of your old responses to a poison arrow issue dealing with "tit-a-tat" feng shui.

The house accross from mine has several pointed roofs, and one is directly pointing at my main door (and is also on top of its main door). However, my house is the same floor plan but flipped so the pointed roof above my front door also directly faces my neighbor's main door and thus directly faces its pointed roof. Is that enough to create a "tit-a-tat" feng shui or do I need to cure the poison arrow?

If I do need to cure the poison arrow, how would I go about it?

Thanks!