Heres the solution as posted in the Yahoo group by Andrew. Seems it is not yet in the latest nightly build
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FlurryExtraAttacks|2+(MonkLVL>=11)(MonkLVL>=6)(MonkLVL>=11)+(MonkLVL>=16)
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FlurryLVL|MonkLVL
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FlurryAttacks|2+(MonkLVL>=6)(MonkLVL>=11)(MonkLVL>=11)+(MonkLVL>=16)
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FAB|0
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FAB_1|FAB
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FAB_2|FAB
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FAB_3|FAB+if(FlurryAttacks==3,-5,0)
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FAB_4|FAB-5
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FAB_5|FAB-10
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FAB_6|FAB-15
CATEGORY=Special Ability|Unchained Monk ~ Flurry of Blows.MOD BONUS:VAR|FAB_7|FAB
This change has been sitting on my repo for the 8+ days you brought it up... here ya go, in the next autobuild.