Thank you. I also had a few that ended up in the bin! One problem was that the camera I built had too many movements - I didn't realise I wouldn't need them all - but no easy way to "zero" them. This was a real design fault. I would pull the camera out of the bag then spend ages zeroing everything before I could start. And sometimes I didn't get it right. It put me off using the camera for some time. Eventually I built another camera with "improvements", then another....It was a long process but eventually I ended up with three cameras that all work very well, and serve different purposes.