You need to bleed them down in order to install the cams correctly.
Also, the best way to "bleed" them down is to use compressed air. Just blow the air into the adjuster and force the oil out. Takes seconds.
It's pretty easy to bleed them down. I used a vise (very slowly). You don't want to break the little valve inside. I've read posts talking about how you can break them if you torque down too hard. Just make sure you bleed them down several times to get all of the oil out. Compressed air may be a little more efficient.
As soon as I get my tune finished I'll see about the dyno. I'll also try and get a vid posted if it doesn't rain today. I don't want to post anything if my car gets dirty...people like to poke fun about that.