if no micro... all you needs is a rubber mallet, just tap it into alignment.
You must not do much process work! If a mallet hits it one way, then soon it will work itself back. That works for "redneck" printing, but NOT for four color quality work.
Can you clamp the screen down in the holder, and then adjust it into registration without loosening the screen from the clamps? That is the key between a normal machine and a good one. In order to do process work you need this. Also the dryer, you need to run some stuff and be sure you are getting the ink to the correct temp. Use a temp gun. The elemts go out on those and you can not tell from just feeling.