Zero for three!
I called to confirm the shop could align a motorhome, they said, "yes". But, the coach is too wide for the lazer style alignment. He adjusted the toe out, no charge until I could find a shop to do the entire alignment. Strike one!
Same shop, suggested the solid valve extension with check ball, rather than the schrader style long valve. They didn't have any. Strike two! Also, didn't have any long valve stems to fit the smaller opening for the Ford E450 wheels! Strike three!
Off to the Ford dealer for an oil change...