Ah thank you, explains a lot.
They did my dads 911 last year and the finish didn't last long, ended up using Zymol Glasur to keep layering. I've got Blackfire carnuba ready to layer with so will let you know how I get on. Cheers
Should pick up a sample pot of whatever they end up using and keep topping up with that. It's very nice wax swissvax, definitely my favourite for ease of use atm.