I think you guys are on the right track.

Now that you mention it I did not notice any air bubbles between the tank and the needle.
I will replace the lines in and from the tank, but as for changing the o rings in the needle.
Is that somthing I should attempt myself? Should I send it in to have it serviced?

I will run it again and watch closer for air between the tank and needle.
If there is air there also, do you think I have to much vibration? should I balence the prop again and see if the tank is foaming?

Does anyone think the older fuel is my problem?

When I run the engine in the garage, I cant get it to die on a long run. It seems to only do it when it is running outside and its cold.

I would tend to belive that the o rings are bad because I live in Alaska and I bring this plane out from warm to cold regularly. That would cause o rings to fail.

Any more suggestions? I am planning on working on this today.