These things are always more difficult than your (or I) think.
Firstly, it's not written in C, but a proprietary audio module language.
Probably more importantly, the knobs run from a minimum to a maximum. Each preset has a value that is a proportion of this range.
Thus, should we change the maximum, every preset that any of our many many loyal users has saved, would sound different.
With hindsight, we would have done it differently, but you can see the problem.
