Robert:
Judging from the order in which the episodes aired, it looks as if they did put it back together. Of course, whether or not they did it correctly, is a guess for us.
It could be possible that the filming sequence of these episodes was different than that of the airing, but since they were a few months apart, I doubt it.
Hoover:
You are right. The machines were on the opposite wall in the earring episode. They moved them across though, because they were back on the original wall in the last episode of the series. It was the one where Bobby was trying to sell hair tonic, and Cindy was attempting to breed rabbits. She had the rabbits in the laundry room, which was also where Bobby and Oliver were disposing of the tonic after numerous failed attempts to market it. Some of it spilled on the rabbits, giving Bobby a new angle.
Although the machines were serving as background only for this episode, it was a memorable one especially since it was the last.
Have a good one,
James