Ahoy!
Good to see some of your images from the weekend.
Good timing in number 1, is that taken at the Hell Corner?
I like the position you have in 2 & 3, the exit to Murrays allows good panning, which incidently, you seem to have no problems with. If you shoot them a bit further out of Murrays with a wide angle, you also get the 'Mount Panorama' signage in the background.
I agree they need a bit more saturation. I tend to find with my settings (dependant on light) that a small reduction in brightness, with about the same increase in contrast helps, followed by a 6 - 10% increase in saturation. This helps give the images a nice magazine quality.
Also, number 3 is cropped a bit tight, with the very back of Ingall rear tail missing. If this is a full sized image, you can always rotate the image 45 degrees, crop heavily to just outside both wheels and make it an 'artsy' shot.
As always, was good to catch up.
