Manage repuation points given by "I approve" scales option?

[MyCTaK]

Hello,
i need to know how many reputation points do scales give when choose "I aprove".
And most important - how to chage scale to give 1 point per use?
The problem is that for 2 years my users used only post hack button (gives 1 rep point) to make reputation and green bars and now for 2 weeks most of them got max green bars and level 100 in vBExperience with "scales". I don't want to remove that feature because of negative usage.
Now i want to recalculate their real reputation and rep power points!
Thanks!