I was wondering if there was an existing thread where there is information on setting up a gas engine on a plane for a first timer?

Start with the sticky at the top ofthe gas enginepage done by Bob Pastorello, lots of great info there for those just starting in gas.

http://www.rcuniverse.com/forum/m_8673009/tm.htm

From there you have selections in the dozens covering the subject. Just use 'first time gasser" for the search.

Thanks...lots of great reading there.

Seems like I found everything I need with the exception of a diagram or description of how to convert the standard Walbro goober throttle linkage over to something that connects with a ball link. Anyone have any advice on what to use?

One option: http://www.troybuiltmodels.com/items/ZDZCPA005.html

The troy built arm is a great option. I made mine before I bothered looking. Used a 3/16" wheel collar and soldered some 1/16" cut brass to it that was trimed like the arm. $10 is worth it.
Edwin

I like using the aluminum blue anodized servo arms from hitec. I get them free with their metal gear servos. Just drill a hole in it and bolt it to the existing arm. Then I put a 2-56 ball end on it. I grind the servo spline hub flat on mine. I also use one on the servo unmodified.