both myself and a friend of mine had problems on tattoine (im a tank, hes a merc dps) we found that it was due to a gear gap, having not geared up the companion as well as we could as well as not having as good as gear for yourselves. i would suggest finding a friendly armourmech to make some gear for you and mako, or check the GTN. this solved the problem for us immediately and made a big difference. hope that helps