Does anyone know how much work it would take to adapt a WR 250F or YZ 250F Carburetor for a stock WR 426 engine. I know they are 37mm carbs and the 426 is 39mm or 41mm, but could it fit and how much performance would I lose with this set up? I wouldn't mind if there would be a little more low end a little less top end. It seems like the 250 carbs always are a lot cheaper. Thanks!