Am I missing something here?

So I fiddled around a little bit with gemming before tonights raid. I downloaded Rawr and tried to understand it, and I think I did. In reality, I prob. Failed.
It told me to almost gem pure Stamina with a very few parry/dodge/mastery gems with stamina on the side. Now I dont feel comfortable doing that. From what I can read, I should focus on mastery until I hit a CTC of 102,4(or is it 104,2?). Now I've regemmed entirely and did it like this:

http://eu.battle.net/wow/en/character/twisting-nether/Raraldur/advanced

That gives me these stats without any buffs at all:
CTC: 93,32%
Block: 63,94%
Dodge rating: 1338
Parry rating: 1392
HP: 158435

I got 3 blue gems to activate my meta gem. Other than that I use 9 Fractured Amberjewel.
Is that wrong? I've tried talking to my healers, but they arent the most talkative bunch of people.

RAWR has always been somewhat sketchy for Tanks. If you need a tool, I would recommend http://askmrrobot.com instead, as Theck helped them with their weightings.

I would put Fine Topaz in red slots, personally.

For gemming, I would just optimise manually - MrRobot is great, but it focuses on melee damage reduction when what you want is to get to 102.4% CTC without cutting stamina too much. Have a look at Digren's gear enchancement guide stickied here. I've tended to go for slot bonuses rather than pure mastery all over, but if I could reach CTC cap by gemming alone, I would. (As it is, it requires ditching my stamina trinket which is too steep a price for me - 10k hp for 4% block.)

There is a nuance with balancing parry and dodge (iirc you want the former rating about 155 higher?) but as long as those two stats are fairly well balanced - to limit diminishing returns - it won't matter much. I refer to Mr Robot for ideas on reforging and it usually gives me something that makes sense but I've never looked at if for gemming.

Ask Mr Robot has an option to choose between CTC and MDR presets.

If you swap the gem in your helm with the gem in your shield you will gain 15 sta.