baseline carb setting for 76 440 mx

[smokeeater495lt]

I JUST HAD THE CARB, A WALBRO WDA47A REBUILT. SET THE MIXTURE SCREW TO THE RECOMMENDED SETTINGS 1 1/4 TURNS OUT EACH. THE SLED STARTED WITH FULL CHOKE AND WOULD ONLY CONTINUE TO RUN WITH CHOKE OPENED 20%. IT DID NOT WANT TO REV UP AND AGAIN WOULD DIE IF CHOKE WAS OPENED PAST 20%. CAN SOME ONE GET ME STARTED IN THE RIGHT DIRECTION WITH TUNING.