Slow spool

Since i got the car back i have experienced erratic spool when going wot low rpm.
Seems it gets better and better the more i go wot but to give an idea here is what it should look like from before the engine swap:
15 psi at 3K


here you can see how it behaves now. boosts until 8 psi than suddenly shoots up passes target, throttle closes and than holds boost fine:



other times is fine just a bit slow starting



i am thinking maybe one diverter valve is a bit stuck and is leaking . Ideas?