Hmm… this might be part of the problem, or at least contributing to it. See this article on the best LED Light Tables for Camera Scanning Film Negatives. If you are using a cheap Amazon LED, it probably has a low CRI (Color Rendering Index).
Gotcha. Development is definitely not my speciality! There are a lot of variables and many things can go wrong. I do find generally that users are more likely to have color issues in their conversions if they have done the development themself (instead a lab). Not to say that is the issue here, but just in general!
That would be awesome. I have been working on improvements to the camera profiles that seems to be especially beneficial for Canon cameras, so this will be a good test for that!
Cheers!