Holley 600 dp jet help

Its a DP
Maybe too much secondary pump-shot?
Or maybe the powervalve is coming in too early.
If it was mine, I would defeat the secondaries and block them shut;then fine tune the primary side first. That's what I would do. Many times the PV can be delayed, or the Pmain leaned out some. After the primary is cleaned up, then I would go back to the secondary side. That's what I would do.
Also, make sure the timing is close to correct.

Missed it by 4 minutes......