The 2 things I would do is go to Midway and buy a Volquartsen Target Hammer Ruger 10/22 Product #: 163143
This will drop the trigger pull weight a lot and clean it up.
2 and this will go against what you were taught , STOP CLEANING the chamber and inside of the barrel . I have seen several tests and tryed it my self ,after a thousand rdns the rifle will group better than with a clean barrel. I am not saying to stop cleaning or lubing the action that is a must.