I just had a couple questions I need adressed by the experts (or anyone for that matter)... 1. I have a wr426 and I'm running a yz tank. I hate running out of gas because some is stuck on the right side... so, can i run a right side petcock? If so... any tutorials or how to's? Does it hurt to run the petcock on reserve all the time? 2. What spark plugs are you guys running? Irridium? 3. Can anyone pull a spark plug on the trail on these machines? I have to remove the tank = pain in the a**! Thanks for any and all input!