I have put a few raids together using OQ, but I am not getting credit for Leader: Raids and I read some post about the dkp not regestering sometimes b/c if player or if non player action i.e. pets, crows from hunter, etc makes killing blow. I have been using a combination of OQ and the Blizz queue system when forming the raid. Do I have to strictly use OQ to get credit for Leader: Raid for it to register? Can i use the combiination of both or a period of time has to pass before it updates?

As long as you are in a oQueue group it should count boss kills and reward DKP. But at the same time tiny doesn't do much pve so its hard for him to test alot of this stuff. He is working on finding bugs related to DKP reporting though.