Forum:Help/advice - zombie deck

Hello, this is my first time posting here on the forums but I have been reading for awhile now and I realize this is my best bet for help.

I need help with my zombie deck, the deck seems to be solid but I have problems when I go to local tournaments. I usually lose against Gladiator Beasts, Blackwings, and Lightsworns. Is there anything I can do to make my deck more powerful. My deck has a few big power plays but they are easily negated and once my big plays are gone then it's usually a lose for me.

I was thinking myself of adding in 2x gold sarcophagus in order to add Dark armed into my hand faster. Also I feel that the Necro Gardna's and Pyramid Turtles don't really help me win a match, they only help to stall a game.

Also I was looking at making a Gladiator Beast or Blackwing deck because those seem more competitive, but if I can get help with my zombie deck I would like to do that instead of trying to get new cards.

Anyways, here is my deck list. Any comments, tips, changes, or anything constructive would be greatly appreciated.

Thanks in advance

-Jodirty