MapleStory Calculator [Version 1.00b]

Is there a way to add the +20% mastery from dark knight's beholder? My max base range is correct, but the min is way off because I can't seem to include that.

Also, I think the damage multiplier for polearm fury is incorrect. Max damage for me would be 28649.25 (6741 base * 250% polearm fury * 170% lvl 20 zerk), but it shows up as 32955. Polearm crusher seems fine.