A good paste wax I've used is Encerite, I think its South American. They also sell it in liquid form on Ebay. When I do my floors I use that and an ancient Hild buffer.
I took apart my Fantom and watched it run and it produced some moderate sparking, got warm but continued to run with no cutting out. Silly thought but could it be that the thermal cutoff switch is worn out and tripping to soon?
Very I interested in the Regina and the assorted extras, I'm certainly after attachments. Can you provide pictures? If easier you could text them to me? Thanks!