holley 4 barrel flooding

Cut the pressue to 4 or 4.5 psi.
Yes. Check the needle and seats too. Had one do that last year.
But if its both front and rear bowls at the same time, its likely too much pressure.
Out driving yesterday with that hot weather (for this time of year) was guanteed to make for high vapor and fuel pressures.
Clean clean clean
Then see if something can be done to reduce that reversion.