Joseph

Hope you will give us a full report on the engine after you have run and installed on a airframe, Want to hear the good, bad and ugly.

I thnk you are going to be pleased with it, All the testing I have done it idles very smooth and good throttle response, I seen one report that it was running ruff in the air if so it means that air flow over the carb making the float diaphragm act up,
This is a common problem with all engines no mater what you paid for them.

Below is a link to a quick fix to that problem

http://www.rcuniverse.com/forum/m_6725278/tm.htm

Milton