Josh! Because you are actually cutting 1/2 way in between them ,either, should work ,however you only want to correct 1/2 of the off amount you are off ,for the same reason ,It's trail and error,use a twoxfour pc. slight cut 1/8" deep ,flip and match ,MAKE SURE IT'S NOT YOUR TABLE TILT FIRST ! Straight edge your table.make sure it's flat s-s & f-b ,if OK ,check table tilt,if OK ,then check set screws as above,could be any of the three ,2x4 test cut most acurate way to test ,better than using sm.sq.When you have resolved ,make test cut in new pc of 2x4 flip and save as test guage ,for future test s after you tilt table,to make sure is reset correctly !! I hope all that makes sense !