Reread my last sentence.... Unless you really bend things you won't damage the machine but it may not be as accurate as possible, but whether that accuracy is necessary is another story. As an example, a bloke who does outboard motor repairs recently bought a used cabinet mounted lathe. I was by his shop and asked him how it was working and he commented that it worked fine and he had made a number of shafts. then he gave it a shove and commented "I really need to bolt it down one of these days". It wasn't even sitting on a level floor - it teetered. And he had already made money with it.
Cheers,
Bruce (bruceinbangkokatgmaildotcom)