The baseline settings are as follows:
1986= main 150, pilot 48, needle clip 4th groove, air screw 1 7/8 out
1987= main 152, pilot 48, needle clip 3rd groove, air screw 1 7/8 out
1988= main 158, pilot 45, needle clip 3rd groove, air screw 1 3/4 out
1989= main 155, pilot 42, needle clip 4th groove, air screw 1 1/2 out
GOOD LUCK!