My front sprocket looks like a thick washer! Time to replace.. What gears are you guys runnning on your 686s? I do mostly sand riding, hill climbing, and of course the drag strip. hardly ever get in 5th. I have to start in 2nd on the strip or it just sits there and spins with hole shots as a 660. Im in the process of building a 11:1 686. Im getting some paddles too...