The weather broke enough to allow me to ride my WR426 around the yard a little. I noticed that while at low speed in first or second gear if I gave a quick twist of the throttle the bike would bog right out for a second. Do I need to adjust the pilot screw? This is my first ride on the bike. I added a fuel filter that slid into the fuel line hence it had a slightly smaller opening than the stock fuel line. I also installed a YZ throttle stop and routed the carb vent lines up near the airbox. Could any of these mods. cause the low speed bog or is it just the pilot screw. I did read on the YZ fourm that this is a common problem w/the YZs. Most owners have just learned to roll on the throttle smoothly at lower speeds instead of snaping it.