Profile editing is rarely the best solution for a problem. I think better questions might be "Why am I getting an abundance of saturation?" and "How else (besides profile editing) can I get the results I desire?"
Care to describe the problem you're having in more detail? Are you're sure it's the new profile that's incorrect - not the old one? Or is it that the simulation profile needs to be remade?
I'm currently working on a project for this photographer who shoots wet plate. We scanned his glass negs and reproduce the tonality in photoshop which is not a pure mono tone image. The color between highlights and the shadow are slightly shifted into either magenta or green. This is a very critical job. Because the differential of the color and the color appearance supposedly bare can see, so it is something you really have to pay a lot of attention to make them correct. After a year later, now I have to reprint them, I have the original print which I printed it as well sitting right next to me. The new profile wasn't that bad but the saturation just a bit higher than before. Since I don't want to touch the file, that's why I'm thinking of to tweak the new profile to match the old one to produce the same result that I used to get from the same printer, 8300. Of course I can re-print a target with more color and gray scale patches in it to see if my profile is bad or not, but with my own test image, I see nothing wrong from it.
Wet plate color is something, it is super headache job, those tiny bit of magenta light brown and tiny bit of green dark muddy color.