Okay first off, this is a carburetor I already have. I want to try and make it work before I go ahead and sell it in favor of some other induction system. I was driving in this morning with the carb sitting on my passenger floor. I had planned to clean it up and post it for sale on ebay, but the more I looked at it I just can't stand to let it go. It is a damn nice piece of machinery. It's a 625 Road Demon. I had the carb on several trails and the only problem I ever had was a stumble while climbing uphill and hitting hard bumps with moderate throttle. So, I want to make this thing into an offroad carb. I've read some recent posts and they have confirmed some ideas I had. *Use tubing to extend the bowl vents *Spring loaded needle/seat *Extended jets (what exactly is the benefit) I'm wondering what other things there are that make the Qjet and Truck Avenger good offroad carbs.