nah you obviously dont "need" more, since you seem to progress allright in Ulduar by the looks of your gear... you seem a bit heavy on the dodge-side. But well avoidance is avoidance, i prefer to balance them a bit more but i guess this is only possible if you got enough gear to do so.
There are several items with good amounts of parry on them pre-ulduar, like:
Nexus War Champion Beads - Item - World of Warcraft
Legplates of Sovereignty - Item - World of Warcraft (ok you wear pants with parry allready)
Ablative Chitin Girdle - Item - World of Warcraft
Rune of Repulsion - Item - World of Warcraft
i think in your case it will even out over the time...if your doing fine so far in Ulduar, everything is fine *g*