The felt fits in between the viewfinder eyepiece block and the shutter chassis, and the other piece is, as msarki said, some kind of light baffle at the top of the sprocket-spindle. Its positioning isn't obvious at first. Note that it fits below the large flat baffle (round with a segment cut off) - ie. nearer to the sprocket. The round baffle is very often bent out of shape when the film-gate casting forced on with the flat side of the baffle in the wrong position.