I'm new to the Morgan world and will have a few questions until I feel comfortable with my car. It's a 1970 4/4. My immediate question is about the turn signal lever/assembly. The stalk will not return to off after making a turn. The signals work so that is good. Is there a common fix for this problem or do I have to get a new switch. If I have to get a new switch is it a common part to MG's, Healeys,and other British cars? Thanks, Mark