Well I have had a bit more of a play with the RC. Conclusion is that yes you can improve collimation using the methods outlined in Stephen Kirks videos and it will yield better images. The improvement means is from absolutely horrible to just plain awful.
The second and third steps, just cannot be done accurately enough to yield worthwhile results IMHO.
So I am going to have to look at a Tak Scope!!
Anyone have one I can borrow for a few days??
Malcolm