Comment 3 for bug 1087437

This was introduced in #1545 to tweaks MIDI centering behaviour and is a part if this issue.
14 should become 0 and 114 should become 1.0000
But 114 evaluates to 1.0079
And in reverse direction 1.0000 evaluates to 113,21

So we need to add add another scaling area to hit 114 at 1.000