secondaries wont open

After you have checked everything over and feel confident that they are or should be opening..... I would use a paper clip on the diaphragm arm so when you test drive it the paper clip will be pushed down the diaphragm arm. So when you pop the hood you can tell if they are opening and how much. I did this years ago on a Holley I had and it helped to diagnose a problem I was having.

You have to bend the paper clip a little and work with it but I think you get the idea.