I recently took the carb off my 01 YZ426 to clean it. I reinstalled it and now I can't get it to start. Normally when the bike is cold, I'll pull the choke, give it a twist of the throttle, and it fires up in one kick. While cleaning the carb, I replaced the fuel screw with an adjustable one. I'm almost certain that's the source of my problems; the only issue I'm having is determining if I need to richen or lean the idle mixture. I've tried with the choke, with the hot start knob, and I started with the fuel screw at 2.5 turns out and have moved it in at 1/4 turn increments and still no luck. I'm about to try some ether just to get it running and warmed up so I can set the fuel screw properly.