ok, I'm an idiot. Since you said you had similar problems when your intake cracked, I went out to check my vacuum lines and I had forgotten to connect one of the lines from the power steering pump. It's crazy because I stared at the engine for quite awhile trying to figure out what was wrong, and somehow I just overlooked it. I still have the surging idle problem I had before i did the valves, but at least I am back to that point now. Tomorrow I will do some further troubleshooting and let you know if I figure out anything on the surging idle. Unfortunately it doesn't just happen when I press the brakes, so it may not be the same thing that other people have been describing.