Yeah. More info would be very helpful.

Taking the engine out is about the only way you're going to clean it effectively.

The "horizontal wing" on the back is the horizontal stabilizer. The horizontal thingy that's attached to it, and moves is the "elevator". Which is broken, and where?

The location of the stripped screw WILL make a difference.

Starting the engine: Is the fuel tank in good shape? Are the fuel lines in place, do they have any cracks or pinholes? Do you have the transmitter and receiver, battery pack to power the receiver, and a working servo hooked to the throttle?

If no Tx and Rx, battery pack and servo, you can still start the engine, but you'll need some way to control the throttle. (The engine DOES have a good prop on it, right?)

You should check the glow plug to see if it's good. And you'll need a glow plug igniter to start the engine.

Fresh fuel will be necessary. 10% nitro fuel is the norm.

Dennis-