In much earlier firmware, pre 2.5 or so, you could edit these fields +/-1 . Since, I have successfully edited the values by saving the .hlx preset then opening in MS word pad. I did save with only a 4 Osc block so there was less code to scan through and I had typed in arbitrary values in the snapshots before saving to make sure these fields were available, though maybe not necessary.
I am not much of a programmer at all, but it was simple in word pad to find the values in the code and edit them in whole numbers. I haven't tried decimal places, I like when a fraction out, combined with the 3 note Osc, you get that subtle detuned fatness. Then I re saved as .hlx and reloaded fine to the Helix. Pain you can't hear the work until then.