Some months back I bought the double disc brake setup from Madass. When I got to fitting it I found that the rim was decidedly wobbly. I took it to someone who makes a living out of straightening wonky wheels who said he could have a go but that it was poorly manufactured and not just a matter of tightening spokes and that I should contact the supplier. From there ensued an exchange of emails between myself and 'Madass'. He could not even admit that there was anything wrong with the wheel until he eventually viewed a video I sent and grudgingly said there was a problem. At no time did he suggest replacing it. I eventually (at the cost of AUD150) had my original rim laced on in place of what he had supplied. Also although I didn't mention this in my emails as it is only a minor problem, I found that the fibreglass mudguard supplied is extremely poorly finished but I am repairing this myself. What really worries me now is whether I am going to experience problems with the rest of the setup. Since this forum is where I first found out about the availability of this twin disc setup I feel justified in voicing my concerns on the forum. Let the buyer beware!