Well, I think I found at least part of the problem: One of the connections in the rubber connector coming from the motor (the one that closes the headlight door) was rusty and wasn't making a good connection. I cleaned it out with a dremmel and the headlight doors now close as well as open. Such a silly little thing causing such a huge investment in time and energy. Welcome to the wonderful world of 40 year old Mopars I guess. Thanks guys for all your help!attaboy