I fitted the Casa ones with no problems. I do not have a picture but there is a video in the technical section on Cambridge Lambretta Workshops site. Their top brackets are different but the principle is the same.
Thanks for that. The ones I have are cranked and don't fit square so the damper leans back and is out at the lower fixing. More crap me thinks why do people spend all their time and money designing something that is useless, I would have thought Casa would know better ?