I have done some searching but it seemed like this could be an issue with a wide range of causes. My first direction seemed to be something to do with oil coating and buggering the o2 sensors as someone ona different site mentioned.
As for the vacuum leak, I had planned to do a smoke test this week. I did one awhile back and found it was leaking through the valve cover fasteners. After rebuilding the disa valve, I wanted to do it again anyways.
Thanks for your input.