Random Spellcast for Weapons

[lopolly]

Ran into another question while doing some experiments. This one is regarding random spells that proc from weapon attacks.

Is it possible to alter the rate of random spellcasts for a weapon?
For example, striking with the Flame Sabre would make the Fire proc happen 100% or whatever desired xx%. (I believe the actual rate in the game is 1 in 4?)

I ran into many entries regarding random spellcasts in the C2 bank, but I was having trouble finding a location that mentions the rates/percentages that could be edited.

Thanks.