I would think if you called Sudco or Carb Parts Warehouse they would be able to match the jetting across both carbs and I would start there as a baseline.
Tom A.
SRCR President
Vintage Series Racer
1974 MT250, 1977 MX3, 1977 RM/TS 175, 1980 CR250R, 1981 YZ465, 87/88 RM125,