I'm finally back to getting things going with the NV3550 and still have an issue. Yesterday I attempted to start my Bronco and there's a very loud noise when I turn the key to start. I'm not even sure how to discern what it is. I have a brand new starter; maybe it's not engaging the flywheel fully? Maybe the clutch? This is so frustrating! I'll record the noise and post it here later. Maybe someone can tell what it is by the sound.
@roundhouse I see in your signature you have an NV3550. Did you run into anything like this when you did yours?