After an operating system upgrade my Illustrator tools are not performing the same. Prior to the upgrade, my pencil tool and pen tool performed the same as the brush tool, where you select the brush you want then begin to draw with that specified brush. Now if I draw using the pen or pencil i have to use plain strokes, then select the paths, then select a brush stroke. I have looked through all kinds of tool preference options and trashed my Illustrator prefs as well.