Once...
my Olympia One was sick when it came time to do the house cleaning. I have other machines that have not yet been restored, but decided to use my Super Chief, made by Landers Frary & Clark (Universal). I picked it up and set it down each time I ran out of hose length. (In my case, I didn't want to scratch the runners!!!) I think I preferred it! When it's on wheels, I seemed to do a quicker, perhaps not as effective job. I did repair the Olympia One though, ain't got time to do that good of a job.
Rick