Hi James,
To be perfectly honest I don’t use the colour correction software, only the ICC profile supplied from Rotech themselves. It’s very rare I have to correct colours (only one recently was for a particular breed of dog, which should be creamy, and the ICC was printing a bit to yellow, sorted in the end).
A lot of my subli items recently have been based around red items, and they’ve worked out fine.
I use Corel Draw 11, and noticed on the screen the difference in colours between 8 and 11, so I now only use 8 for files relating to Corel 5. I still have to load 5 now and again to open older .cmx files such as those from Corel Art Show.
Visit the Rotech site, register and they will send you a link to download the ICC, that’s they way I got mine.