[CAUT] Piano truck for six legs

[Bob Hull]

We have a institutional piano with six legs and they want a piano truck for it.  It will be rolled around on the stage some.  
I have thought about just using six of the 4 wheel dollies or modifying a 3 legged piano truck by adding a cross piece to support the extra legs.
It would be welded on.  
It is a small Packard grand.  
Any ideas of comments would be welcome.  

Thanks, 
Bob Hull