"He said he has it setup to run rich. what does he mean."

He means that he has the mixture needles set richer than peak RPM, how rich I don't know, I would not trust his adjustments. It is not good practice to run gas engines richer than about 100 RPM from peak. All it does is waste gas, foul plugs, and carbon up the combustion chamber and nuffler.

I won't say Amsoil is good or bad, I will say that I won't use it. I will also never run less oil than a 50:1 mixture. There are many oils out there that will give satifactory protection and lubrication, some are better than others. A few oils that I have used with good to excellent results are Penzoil for air cooled engines (not multi purpose), Stihl, Echo, Bel-Ray, and Redline.

If your using a full synthetic oil just mix it at 50:1, warm it up, adjust the carb and go fly.

If you go with a mineral based oil, mix it at 32-40:1, steps 2, 3, and 4 are the same.