Thanks everyone.
David shot 5 is just one AVI. 1800Fs and gain 350/400- 1/30exp- and Gamma 45. Shot 2 is two different exposures. 210Gain - 1/30exp - and 45Gama for the disc. The prom was 550 / 1/30 /200Gama. The disc was pasted on the prom after RegiStax6 and then the disc only selected as a mask and applied in a separate layer. You can then do lots of Magic things with refine mask to complete the image.
Shot three is only one AVI as well. It was processed as normal and then inverted and then sorted with curves. I seem to be able to capture fila/proms much better this way.
Hope this is clearer than mud if not feel free to ask more.
Cheers.