Paul is giving you excellent advice which you really should follow if you want to improve your imaging. If you can improve your alignment by using first align master followed by a quick drift align using Phdguiding you will be ok for guiding but unless you get your focus and flexture out of the system then you will not be able to collect longer exposures and better images.
Each small step will improve your photos and even if you keep imaging the same object to death you can look at them chronologically and see the improvement.
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