How to properly drill carb jets?

After doing more driving and testing it turns out my primary part-throttle is way lean to the point of bogging out (can see it with my wideband O2 AFR readout), I thought it was a tad lean but close to good... I just ordered the #87 jets from Summit they were only $6, also a Carter stock replacement pump. I'm more inclined now to add an electric fuel pump at some point too.