[Aussie_Dave]

To visually see which vane is out I put a small hand spirit level on the vane and sighted along the bottom of the spirit level that's sitting flat on the spider vane, it should point directly at the image of your spider vane on your primary mirror. This was a rough guide for me to correcting the spider vanes in my 1200mm focal length Newt. Best to do it at each end of each spider vane.

If you are going to test it this way, put your telescope flat on a table, not pointing up because if you accidentally drop the spirit level you don't want it falling on to the primary mirror.

It looks like to me Geoff that the spider vane that's pointing to the top right hand corner in your image is tilted, not twisted.
The spider vane that's pointing to the bottom right looks tilted with slight twist.
The spider vane that's pointed to the bottom left looks to be slightly tilted.
The spider vane top left is close to good.

The focus looks to be a bit off so the top left spider vane may actually be pretty good so I wouldn't touch that one for now.