MontegoRX7

MY car is running kind of a weird boost pattern. I have an intake and downpipe. I am getting 11 on the primary. Then I get 8 at the switchover (4500) then it drops to 5 (5000) and builds back to 11-12 psi (6500). What do you think is the problem? I just had all my vac lines and solenoids checked. I am going to put in a manual "home depot" boost controller and pre spool controller to get it back down to 10 psi. Do you think adding some more pre spool will fix the problem? Do you think the nipple valve boost controller is ok? Im just looking to set it back to stock levels, and adjust the pre spool.

Thanks
LJ