I don't have the tools to bend a thick piece of aluminium to the perfect shape - so mine looks a bit rough around the edges. Even with the reinforcements, I can still see some movement, but I've come to the conclusion that no matter what you do there will always be **some** movement, the trick is to get it within the tolerance you need to hold focus and collimation.
I'm happy to report my scope is now reasonably stable and even keeping focus well through the night (this was the hard part).
I changed so many things, I'm not exactly sure what fixed the problem in the end. Probably a combination of things in the end...
