Noob to TT, but been around the block. Just bought an '89 XT350. Searched the interweb high & low and all of the experts have different theories on how to make this beast run better. I'm so confused. I know this XT350 carb thing has been beaten to death, but I do not want to screw up these sacred carbs trying to alter something I know nothing about. My bike specs; 1) All stock, well used XT350 with 4500 on the odometer (probably not accurate). 2) Unmolested factory airbox with new filter. 3) Stock exhuast with baffle removed? (hole big enough to shove a banana in ). 4) New battery. 5) Bike starts up easily. 6) Bike runs like a dream at 2500-3000 rpms. 7) Won't go over 55mph. 8) Won't idle, stalls at stop lights unless you feather/stay on throttle. 9) Only runs with choke fully on. 10) After riding it for a couple miles/extended period of time, leaks fuel. Looks to be half an ounce to a full ounce, then stops. 11) I live at 7100' in Southern Colorado and will do a majority of my riding at around 6500' to 7500'. I want to get this bike back to it's original factory state of operation. Not trying to get yz450 performance, just solid reliability and idle. I've read all sorts of "tips" from drilling out the cap screw and backing out the mixture screw 2-4 turns, drilling out the main with a #77 bit, shimming the needle with washers made for an rc car, using XT600 jets, buying a new stator, etc. Why Tatsujin Yamaha had his ninjas build this carb set-up in the secret basement is beyonnd me, but I know that set up right it works flawlessly. I am not a carb guy. I am moto-capable (as opposed to a motard? ). Your thoughts and insights would be appreciated! I had a banshee of the same year. The twin carbs where a constant battle to keep the Banshee even ridable. My solution was one of those 2 into 1 manifolds and a 34mm carb. It appears that the top end on the XT350 would be out of the same parts bin as the top end on the (350) Banshee. I will explore this option further as once I converted the Banshee, it had so much low end pull that it was a blast going up sand hills! Anybody have any thoughts or know of any research done on this? I have heard of this mythical torque coming from the XT350, but I have not appeased the enduro gods enough to experience it. Since I want this bike to be a primarily around town & Jeep road fun bike, I want it to run like a new bike hence the effort. Thanks for any and all help!