SouthernBlood : Managing the aggression of male cichlids in your tank, is a very important factor for all hobbyists. You need a proper amount of territory and a good harem ratio of females, depending on the species.
If you fine your new additions 3 Pseudeotropheus polits do not fit into your current mix and are causing problems. Then Go with what you think is best and what your gut is telling you, and return them back to your LFS and get a credit for them.
If it was so,it might be;and if it were so,it would be;but as it isn't,it ain't.That's logic.Tweedledee.