Thanks folks ... I have read all posts and will take the advice. Adie, the screws were to secure the shaft so that the sleeve and shaft turn as one. A member has agreed to knock these up for me and pointed out the same flaws in my design as everyone else did. So once again, thanks everyone, I will post to my build log/blog as progress is made, (Don't hold your breath though, my build is progressing with the speed of a striking slug!!)