Nitrous plumbing A1A...??..

You've probably already found some smaller jets but here's this>
https://inductionsolutions.com/shop/nitrous-accessoriescomponents/jets/nitrous-jets/

.052n jet was rated at 125hp on a cheater plate with the NOS N/solenoid [email protected]" and the NOS plate.
To run a "clean" tune today with retard you would have a smaller fuel jet than N jet, approx 5>10 smaller.