You should buy a bigger fuel pump! That can handle the demand of a high horse power application because it's about volume not pressure ! ( In saying that!) under a hard accleration with a good fuel pump that fills the demands of the bowls trying to empty out, that should never happen due to the fact that the bowls are at negitive pressure under acceleration the in coming fuel should fill bowls faster with the right fuel volume and pressure with a good high flow regulator with a properly set float adjustment and high flow needle and seats! There for the pv holes and and jet extensions should stay completely covered all the time good luck joe g 8)