Newbie needs help with DB30 predator

#1
I am a totally mini bike newbie just starting my first project. I Bought a DB30 with a predator already on it last summer, and I want to take the governor out, but I hear it's best to change out the rear sprocket to avoid falling on your ass? The current sprocket pretty much covers the whole face of the rear wheel. Do I need a smaller sprocket? If so, where can i get one? Thanks!
 
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