Windshield wipers hanging up halfway

I meant rotating the wiper pivot assemblies 180 degrees, mounted with 2 studs so doable. this helped my 73 valiant wipers run much smoother and quieter but wasn't going to help the 67 model.
I don't think you'll do this from underneath either. Reseal them to cowl would be needed to prevent water leak. Buying wiper pivot seal kits and adding those grease fittings is the typical method to the madness.