help please... totally mystified. when I was dissasembling I moved the shutter dial button from lock and the spring and 1.5mm ball bearing fell out.Problem is; I cant figure out how to get the ball bearing back in. The spring slides right down in the hole but the bearing will not fit.Does the shutter dial need to be separated from the shutter dial block and then the ball sandwiched between the two?? and how did the ball even come out because the diameter is bigger than any of the shutter stop holes on the dial!