We were all noobs once and I know I have asked a whole multitude of noob questions 
If a hole in the brass clock plate has worn so it now looks oval you need to insert a brass bushing which is just a new hole. This can also be shown up by a pivot or arbor having too much play in the hole. The original hole in the plate is filed with a small rat-tail fail to even out the wear in the opposite direction. A cutting broach is then used to cut the hole large enough for a brass bushing to be riveted in place thus getting the hole back to its original size. If you watch Bobs videos on clock repairs you will see various methods you can use for fitting a bushing.
Please dont ever worry about asking noob questions, its what we are here for
