I got this Holley carb from a swap meet, the secondaries will not move. I have been trying to get them to move for 2 weeks and they wont budge. I even took carb apart, soaking it with PB and nothing.
have you tried removing the base plate with the butterflies and put it in the oven at 150° - 250° for a while to see if it will free up? Remember to use oven mitts to handle it after heating.
Sometimes I give up and call it a parts carb