No problem, one thing I would do when you get the engine is to leave the carb off, and remove the head and backplate, and inspect the engine very well for any metal fragments, after inspecting if you have access to an air compressor blow it out real good, and you will be ready to go, you'll love the engine.

You may already know this but:
Put all parts back in the exact position you removed them, mark the front of the head b4 removing and put it back on the same way, same with backplate. There is a metal gasket under the head, it should stay in just watch for it, and the gasket behind the backplate, dont break that, just be careful when you disassemble and you wont have any problems. Daz...