Matt's gunbelt and holster change after the initial bar scene. At the beginning he is wearing the traditional rig that has a gunbelt with a separate holster that slides over the belt. Later, when returning to town, he has a "Buscadero" style (holster and gun belt are attached to one another).
When Flora and Fos open the door to go into the store, a wall is seen just inside and they have to turn to the left. Later, when seen from the inside, the door opens and there is no wall, just the wide open room of the store.