Uncrushable macro

[cccbutch]

/script DEFAULT_CHAT_FRAME:AddMessage("Need 102.4 combined avoidance. Currently at:",0.8,0.8,1)
/script DEFAULT_CHAT_FRAME:AddMessage(GetDodgeChance()+GetBlockChance()+GetParryChance()+5+(GetCombatRating(CR_DEFENSE_SKILL)*150/355 + 20)*0.04,1,0.5,0)


I got this from one of the pages on here and it's kinda confusing me. When I use it it gives me 56.6499, shy of uncrushable as I don't yet have my Libram.

However, when I add my numbers up it adds up to something different. 13.37 dodge, 16.44 Parry, 16.13 Block, 492 defense which gives 5.68 dodge, block, and parry. When I add these number I get 51.61. If I add the 5.68 decrease to getting hit/crit it goes to 57.3 which still doesn't match.

Is there a problem with the macro, am I adding wrong, or am I just missing something. Any help would be appreciated. Many thanks.

PS. heres my Armory, however my numbers might not be the same as I'm currently obtaining switching out gear trying to find the right sets.(Yes, I know I need enchants, want to make sure I have the right gear before I put them on) http://armory.worldofwarcraft.com/character-sheet.xml?r=Aerie+Peak&n=Agonywagon

[SSJPred]

Not sure if I'm 100% correct on this.. But the 5.68 is already added into it. You're supposed to add 5.00 for the already given 5% to miss

[_Chloe]

5.00% Base to be missed
5.68% Chance to be missed
13.37% Dodge
16.44% Parry
16.13% Block
-----------------
56.62% Total

Variance of +/- 0.05 due to rounding mechanics of the Interface.