73 Dart Sport Sunroof Help

My car is also a 73 Dart 340 Sport with sunroof. My sunroof panel will only work by cranking it along with tugging on it with my other hand. I'm hoping when I get to it that maybe a good cleaning and lube will free it up enough to work properly. The gear at the crank doesn't look to be worn. I do remember that someone on this site was offering reproduction gears a while back.