I can plan all I want and list campgrounds and routes, and then it all goes to hell. The truck engine started “missing” in South Dakota. Ford dealers are few and far between. Luckily we stopped at a auto repair shop along the road and the owner was very helpful. Couldn’t actually help us but directed up to Mobridge, SD. The dealer had the plugs but couldn’t do it til Wednesday.  So they called around and got us into a garage in the afternoon. We wandered the small town on the Missouri River and also visited one of the two places that swear they have Sitting Bulls remainshttp://www.roadsideamerica.com/story/28961

We are now taking a more angled faster route to Glacier. Disappointing, but I really want to stay on schedule!