WHAT I WOULD TRY ON YOUR PUMP , IS LIKE ZACHERY MACK DID ON HIS ,START WITH IT AT THE FACTORY ADJUSTMENT AND THEN MAYBE 1/8 OF A TURN AT A TIME AND THEN DO A FULL THROTTLE IN MAYBE 3RD GEAR TO LOAD THE ENG , AND ADJUST FOR MINIMUM SMOKE , YOUR PUMP MAY BE MUCH MORE SENSITIVE THAN THE ONES WE GOT , AS THE ONES WE HAD, THERE WAS NO ELECTRONIC CONTROLS AT ALL , EXCEPT FOR THE FUEL CUTOFF. , AND YOURS MAY HAVE A TIMING CONTROL CONTROLLED BY THE COMP ALONG WITH THE EGR CONTROL , AND WE NEVER HAD ANY INFO ON THE LATER ENGS AS FAR AS THE FUEL AND TIMING CONTROL GOES , ... JERRY