You will run into this type of questions more and more as your tank matured. In the wild, corals are constantly fighting for space. I have zoas touching the base of sps and depending on the size of the sps, if they are big enough, they will shade the zoas and the sps will be ok. If your sps is still small then I would trim back the zoas or build a small epoxy wall to keep them away to give your sps time to mature.