Just jumped on board and gave first call here-hello! To make story short I live here in bush Alaska and to send a firearm out takes quite abit of time. I ordered a timney trigger for my Model 70 as the original when I bought was pretty roughed up-figured I would learn how later to hone trigger and sear with proper tools and stones-not free hand. Anyways I fitted the Timney into the action and noticed that the bolt stop retainin pin obviously was to long - I shortened it to fit - Marvelous trigger pull now. Noticed when stock was installed the safety did not move at all. What tool is needed to actually clean up or file the safety engagement surface inside the bolt? I noticed the surface is rounded-what is used a dremel with alot of care for sure. What can I expect to finish up the job?