I bought a stand that holds four 20 Longs vertically back in 2012. It has migrated around the house but I can't find a good spot to set it up. Right now, it resides in front of the room that holds the house mechanicals - boiler, water heater, water valve. I don't have to go in there all that much, but sometimes I have to re-light a pilot light or figure out where a puddle of water came from. How unwise would it be to put the rack of tanks on casters so I can set it up in that spot without totally barricading off the utility room?