The smaller the main bleed the LATER the booster starts.
The larger the main bleed the SOONER the booster starts.
So…if you go from your .033 MAB down to an .026 you will start the booster later.
At that point you start getting a bigger gap in the time between the near (later) end of the T slot and getting on the booster. Under certain conditions you may have to start the PV a bit sooner (higher number) so when the booster does come on and the load is high enough you have PV fuel there.
And it may require some tuning on the accelerator pump circuit.
EDIT: ignore the PV timing. I just came off a 3.5 hour nasty drive and I lost my mind.
Until it’s on the booster the PV opening point won’t matter. Unless I’m thinking wacky again.
I’ll sleep on it.