I've never, ever had a problem finding Dimetrodons on the Valhalla map. Until I went to tame some.

I've played several hours in a local game, exploring the map and my start location was right at the mouth of the river. So they were easy to find. I recently started on a primative Valhalla server and wanted to try breading. So I went looking for Dimentrodons. And I looked. And I talked to the Admin (because I know the map I'm giving him feedback on balancing dino spawn numbers). Finally the Admin did a wipe. I found three right away (and killed them while trying to tame them with a crossbow). Since in the hours that followed I've only found two. Both dead in the middle of the river. It reminded me of when the Dimetrodons first came out. When they were bugged and would drown.

So are they bugged again? Is it something with the map? Another one of the mods somehow conflicting? I'll do more research, but I wanted to know if anyone else was having this problem.