Well 10 center normally gives you a lot of push because the power to the rear wheels pushs the front tires... the 1k rear probly cancels that out for the most part. I was thinking about trying that setup after hearing you and Alex talking about it in another post. I feel most comfortable when I'm flat tracking though so I usually have 3k in the rear to break the tires loose. I still don't understand 10-5-10. I might have to try that for myself.