Under mine I found rainbows, bunny rabbits, and candy. You will probably find a small amount of oil and the stator windings. However, your joy could soon lead to sorrow if you are not VERY careful when you re-install the cover and pinch those two f'ing wires that fit(?) in a tight grove in the case and cover.
This one thing took me over an hour to get fit correctly, the first time I did it. And, that was after I ate all the candy.
#2? Buy a new gasket. It's price will teach you not goof around in here unless it is ABSOLUTELY necessary.
Have fun! That's what TWs are for and you never know what you will find inside the engine.