Right turn signal works front and rear on the '63 Champ. Left signal does not flash. With signal lever in left position, the left front parking light stays well lit and rear turn signal light stays less well lit, but neither flash. Have checked the bulbs and both do not have broken filaments. Have read past posts on this, including Bob Johnstons site info which is great, but this situation does not seem to be addressed. Any suggestion would be appreciated. Thanks