Item Generation question

[Dagni]

Just a couple of small things.

After this, it selects the skill id. It will start at a certain value depending on the ilvl:

Above 36: 5
Between 24 and 36: 4
Between 18 and 24: 3
Between 18 and 11: 2
11 or lower: 1

You seem to be clear about ilvl 36, but what about ilvls 11, 18, and 24? Which skill id will each return?

This the becomes a base for all the skill ids. Then, it has a chance to be modified:

20% chance to add 1
50% chance to stay unmodified
10% chance to subtract 1
20% chance to subtract 2

Could you confirm this, or is it a typo? It would seem more logical for it to be 20% chance to subtract 1, 10% to subtract 2. Also when playing I'm pretty certain I saw a lot more of the '-1' group than the '-2'.

Thanks again for your help

- Dagni