Those rivet nuts look good, I found this you tube link:
http://www.youtube.com/watch?v=Wf-mwytdurQ
I will see how the current setup holds after a few journeys, hopefully it will be fine as it is.
The cyclone kit could do with nylon locking nuts imo.
I have done 2 very short tests, as the roads are so wet and its always dark. It seems to be running fine, its great fun!
Ger