@Simon Barden: Thank you for your detailed response thats some great information there.

1) Thanks for explaining that, I had no idea. I might leave the pinning until I am certain

2. Perfect - I watched the video JohnH posted and that helped me understand.

3. Sweet! Got a custom one I have made

4. You explained that so well thanks! Great tip about increasing the holes in the body - I will do that as the holes are currently super slim.