I'm working on installing a Honda 13hp on my yerfdog. I have a series 40 clutch, with a 60t axle sprocket. I have both a 10t, and a 12t jack shaft sprocket. Whats the best gear to use for a heavy cart / heavy rider? I'm leaning towards the 12t sprocket for a 5:1 for low end take off and good top speed.....