First suggestion is to read the manual for the engine THOROUGHLY! It will be chocked full of very useful info and diagrams that could make your first attempts at tuning the engine much easier. Also, if possible, have someone else with experience listen to the motor and make adjustments if necessary. Just make sure you get them to explain why they did what they did. Learning to start the engine is just the beginning, you must then learn to adjust the needle valve and sometimes be able to distiguish certain sounds from the engine as you adjust. Again the engine manual will be very helpful in this area.

As for prop balancing, if you can't get your hands on a prop balancer, just put a nail, screwdriver, pencil or other object of that nature through the shaft hole and hold it level. If one side of the prop continually drops to the bottom you have two choices. One, either sand off some of the heavy side. Or two, add some weight to the lighter side. I use the second option. The weight is added by spraying layers of clearcoat model spraypaint (available in most WMarts) to the lighter side until both sides sit level.