Coding Shift Hotkey

Hello,

Thank you very much for the mod. I really enjoyed it.
I have a problem though when I hit a few ten of thousands skill levels, because the fastest way is to hold shift and scrolling. But at some point it's really slow. Would it be possible to choose what holding shift does ? Like upping 100, 1000, 10 000 more level skills insteand of 10 ?
Thank you anyway :)
Eric